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< a class = "pagetitle" href = "index.html" > NimYAML< / a >
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< a href = "index.html" > Home< / a >
< a href = "testing.html" > Testing Ground< / a >
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< span > Docs:< / span >
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< a href = "api.html" > Overview< / a >
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< a href = "serialization.html" > Serialization< / a >
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< a href = "yaml.html" > Module yaml< / a >
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< h1 class = "title" > NimYAML< / h1 >
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< h1 id = "introduction" > Introduction< / h1 > < p > < strong > NimYAML< / strong > is a pure YAML implementation for Nim. It is able to read from and write to YAML character streams, and to serialize from and construct to native Nim types. It exclusively supports < a class = "reference external" href = "#http://www.yaml.org/spec/1.2/spec.html" > YAML 1.2< / a > .< / p >
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< p > Source code can be found on < a class = "reference external" href = "https://github.com/flyx/NimYAML" > GitHub< / a > . You can install it with < a class = "reference external" href = "https://github.com/nim-lang/nimble" > Nimble< / a > :< / p >
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< pre class = "listing" > nimble install nimyaml< / pre >
< h1 id = "quickstart" > Quickstart< / h1 >
< h2 id = "dumping-nim-objects-as-yaml" > Dumping Nim objects as YAML< / h2 > < table class = "quickstart-example" > < thead > < tr > < th > code.nim< / th >
< th > out.yaml< / th > < / tr > < / thead > < tbody > < tr > < td > < pre class = "listing" > < span class = "Keyword" > import< / span > < span class = "Identifier" > yaml< / span >
< span class = "Keyword" > type< / span > < span class = "Identifier" > Person< / span > < span class = "Operator" > =< / span > < span class = "Keyword" > object< / span >
< span class = "Identifier" > name< / span > < span class = "Punctuation" > :< / span > < span class = "Identifier" > string< / span >
< span class = "Identifier" > age< / span > < span class = "Punctuation" > :< / span > < span class = "Identifier" > int32< / span >
< span class = "Keyword" > var< / span > < span class = "Identifier" > personList< / span > < span class = "Operator" > =< / span > < span class = "Identifier" > newSeq< / span > < span class = "Punctuation" > [< / span > < span class = "Identifier" > Person< / span > < span class = "Punctuation" > ]< / span > < span class = "Punctuation" > (< / span > < span class = "Punctuation" > )< / span >
< span class = "Identifier" > personList< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > add< / span > < span class = "Punctuation" > (< / span > < span class = "Identifier" > Person< / span > < span class = "Punctuation" > (< / span > < span class = "Identifier" > name< / span > < span class = "Punctuation" > :< / span > < span class = "StringLit" > " Karl Koch" < / span > < span class = "Punctuation" > ,< / span > < span class = "Identifier" > age< / span > < span class = "Punctuation" > :< / span > < span class = "DecNumber" > 23< / span > < span class = "Punctuation" > )< / span > < span class = "Punctuation" > )< / span >
< span class = "Identifier" > personList< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > add< / span > < span class = "Punctuation" > (< / span > < span class = "Identifier" > Person< / span > < span class = "Punctuation" > (< / span > < span class = "Identifier" > name< / span > < span class = "Punctuation" > :< / span > < span class = "StringLit" > " Peter Pan" < / span > < span class = "Punctuation" > ,< / span > < span class = "Identifier" > age< / span > < span class = "Punctuation" > :< / span > < span class = "DecNumber" > 12< / span > < span class = "Punctuation" > )< / span > < span class = "Punctuation" > )< / span >
< span class = "Keyword" > var< / span > < span class = "Identifier" > s< / span > < span class = "Operator" > =< / span > < span class = "Identifier" > newFileStream< / span > < span class = "Punctuation" > (< / span > < span class = "StringLit" > " out.yaml" < / span > < span class = "Punctuation" > ,< / span > < span class = "Identifier" > fmWrite< / span > < span class = "Punctuation" > )< / span >
< span class = "Identifier" > dump< / span > < span class = "Punctuation" > (< / span > < span class = "Identifier" > personList< / span > < span class = "Punctuation" > ,< / span > < span class = "Identifier" > s< / span > < span class = "Punctuation" > )< / span >
< span class = "Identifier" > s< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > close< / span > < span class = "Punctuation" > (< / span > < span class = "Punctuation" > )< / span > < / pre > < / td >
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< td > < pre class = "listing" > < span class = "Directive" > %YAML 1.2< / span >
< span class = "Keyword" > ---< / span > < span class = "TagStart" > !nim:system:seq(nim:custom:Person)< / span >
< span class = "Punctuation" > -< / span >
< span class = "StringLit" > name< / span > < span class = "Punctuation" > :< / span > < span class = "StringLit" > Karl Koch< / span >
< span class = "StringLit" > age< / span > < span class = "Punctuation" > :< / span > < span class = "DecNumber" > 23< / span >
< span class = "Punctuation" > -< / span >
< span class = "StringLit" > name< / span > < span class = "Punctuation" > :< / span > < span class = "StringLit" > Peter Pan< / span >
< span class = "StringLit" > age< / span > < span class = "Punctuation" > :< / span > < span class = "DecNumber" > 12< / span > < / pre > < / td > < / tr > < / tbody > < / table >
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< h2 id = "loading-nim-objects-from-yaml" > Loading Nim objects from YAML< / h2 > < table class = "quickstart-example" > < thead > < tr > < th > code.nim< / th >
< th > in.yaml< / th > < / tr > < / thead > < tbody > < tr > < td > < pre class = "listing" > < span class = "Keyword" > import< / span > < span class = "Identifier" > yaml< / span >
< span class = "Keyword" > type< / span > < span class = "Identifier" > Person< / span > < span class = "Operator" > =< / span > < span class = "Keyword" > object< / span >
< span class = "Identifier" > name< / span > < span class = "Punctuation" > :< / span > < span class = "Identifier" > string< / span >
< span class = "Identifier" > age< / span > < span class = "Punctuation" > :< / span > < span class = "Identifier" > int32< / span >
< span class = "Keyword" > var< / span > < span class = "Identifier" > personList< / span > < span class = "Punctuation" > :< / span > < span class = "Identifier" > seq< / span > < span class = "Punctuation" > [< / span > < span class = "Identifier" > Person< / span > < span class = "Punctuation" > ]< / span >
< span class = "Keyword" > var< / span > < span class = "Identifier" > s< / span > < span class = "Operator" > =< / span > < span class = "Identifier" > newFileStream< / span > < span class = "Punctuation" > (< / span > < span class = "StringLit" > " in.yaml" < / span > < span class = "Punctuation" > )< / span >
< span class = "Identifier" > load< / span > < span class = "Punctuation" > (< / span > < span class = "Identifier" > s< / span > < span class = "Punctuation" > ,< / span > < span class = "Identifier" > personList< / span > < span class = "Punctuation" > )< / span >
< span class = "Identifier" > s< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > close< / span > < span class = "Punctuation" > (< / span > < span class = "Punctuation" > )< / span > < / pre > < / td >
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< td > < pre class = "listing" > < span class = "Directive" > %YAML 1.2< / span >
< span class = "Keyword" > ---< / span >
< span class = "Punctuation" > -< / span > < span class = "Punctuation" > {< / span > < span class = "StringLit" > name< / span > < span class = "Punctuation" > :< / span > < span class = "StringLit" > Karl Koch< / span > < span class = "Punctuation" > ,< / span > < span class = "StringLit" > age< / span > < span class = "Punctuation" > :< / span > < span class = "DecNumber" > 23 < / span > < span class = "Punctuation" > }< / span >
< span class = "Punctuation" > -< / span > < span class = "Punctuation" > {< / span > < span class = "StringLit" > name< / span > < span class = "Punctuation" > :< / span > < span class = "StringLit" > Peter Pan< / span > < span class = "Punctuation" > ,< / span > < span class = "StringLit" > age< / span > < span class = "Punctuation" > :< / span > < span class = "DecNumber" > 12 < / span > < span class = "Punctuation" > }< / span > < / pre > < / td > < / tr > < / tbody > < / table >
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< h2 id = "customizing-output-style" > Customizing output style< / h2 > < table class = "quickstart-example" > < thead > < tr > < th > code.nim< / th >
< th > out.yaml< / th > < / tr > < / thead > < tbody > < tr > < td > < pre class = "listing" > < span class = "Keyword" > import< / span > < span class = "Identifier" > yaml< / span >
< span class = "Keyword" > type< / span > < span class = "Identifier" > Person< / span > < span class = "Operator" > =< / span > < span class = "Keyword" > object< / span >
< span class = "Identifier" > name< / span > < span class = "Punctuation" > :< / span > < span class = "Identifier" > string< / span >
< span class = "Identifier" > age< / span > < span class = "Punctuation" > :< / span > < span class = "Identifier" > int32< / span >
< span class = "Keyword" > var< / span > < span class = "Identifier" > personList< / span > < span class = "Punctuation" > :< / span > < span class = "Identifier" > seq< / span > < span class = "Punctuation" > [< / span > < span class = "Identifier" > Person< / span > < span class = "Punctuation" > ]< / span >
< span class = "Identifier" > personList< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > add< / span > < span class = "Punctuation" > (< / span > < span class = "Identifier" > Person< / span > < span class = "Punctuation" > (< / span > < span class = "Identifier" > name< / span > < span class = "Punctuation" > :< / span > < span class = "StringLit" > " Karl Koch" < / span > < span class = "Punctuation" > ,< / span > < span class = "Identifier" > age< / span > < span class = "Punctuation" > :< / span > < span class = "DecNumber" > 23< / span > < span class = "Punctuation" > )< / span > < span class = "Punctuation" > )< / span >
< span class = "Identifier" > personList< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > add< / span > < span class = "Punctuation" > (< / span > < span class = "Identifier" > Person< / span > < span class = "Punctuation" > (< / span > < span class = "Identifier" > name< / span > < span class = "Punctuation" > :< / span > < span class = "StringLit" > " Peter Pan" < / span > < span class = "Punctuation" > ,< / span > < span class = "Identifier" > age< / span > < span class = "Punctuation" > :< / span > < span class = "DecNumber" > 12< / span > < span class = "Punctuation" > )< / span > < span class = "Punctuation" > )< / span >
< span class = "Keyword" > var< / span > < span class = "Identifier" > s< / span > < span class = "Operator" > =< / span > < span class = "Identifier" > newFileStream< / span > < span class = "Punctuation" > (< / span > < span class = "StringLit" > " out.yaml" < / span > < span class = "Punctuation" > )< / span >
< span class = "Identifier" > dump< / span > < span class = "Punctuation" > (< / span > < span class = "Identifier" > personList< / span > < span class = "Punctuation" > ,< / span > < span class = "Identifier" > s< / span > < span class = "Punctuation" > ,< / span > < span class = "Identifier" > options< / span > < span class = "Operator" > =< / span > < span class = "Identifier" > defineOptions< / span > < span class = "Punctuation" > (< / span >
< span class = "Identifier" > style< / span > < span class = "Operator" > =< / span > < span class = "Identifier" > psCanonical< / span > < span class = "Punctuation" > ,< / span >
< span class = "Identifier" > indentationStep< / span > < span class = "Operator" > =< / span > < span class = "DecNumber" > 3< / span > < span class = "Punctuation" > ,< / span >
< span class = "Identifier" > newlines< / span > < span class = "Operator" > =< / span > < span class = "Identifier" > nlLF< / span > < span class = "Punctuation" > ,< / span >
< span class = "Identifier" > outputVersion< / span > < span class = "Operator" > =< / span > < span class = "Identifier" > ov1_1< / span > < span class = "Punctuation" > )< / span > < span class = "Punctuation" > )< / span >
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< span class = "Identifier" > s< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > close< / span > < span class = "Punctuation" > (< / span > < span class = "Punctuation" > )< / span > < / pre > < / td > < td > < pre class = "listing" > < span class = "Directive" > %YAML 1.1< / span >
< span class = "Keyword" > ---< / span > < span class = "TagStart" > !nim:system:seq(nim:custom:Person)< / span >
< span class = "Punctuation" > [< / span >
< span class = "TagStart" > !nim:custom:Person< / span > < span class = "Punctuation" > {< / span >
< span class = "Punctuation" > ?< / span > < span class = "TagStart" > !!str< / span > < span class = "StringLit" > " < / span > < span class = "StringLit" > name" < / span >
< span class = "Punctuation" > :< / span > < span class = "TagStart" > !!str< / span > < span class = "StringLit" > " < / span > < span class = "StringLit" > Karl Koch" < / span > < span class = "Punctuation" > ,< / span >
< span class = "Punctuation" > ?< / span > < span class = "TagStart" > !!str< / span > < span class = "StringLit" > " < / span > < span class = "StringLit" > age" < / span >
< span class = "Punctuation" > :< / span > < span class = "TagStart" > !nim:system:int32< / span > < span class = "StringLit" > " < / span > < span class = "StringLit" > 23" < / span >
< span class = "Punctuation" > }< / span > < span class = "Punctuation" > ,< / span >
< span class = "TagStart" > !nim:custom:Person< / span > < span class = "Punctuation" > {< / span >
< span class = "Punctuation" > ?< / span > < span class = "TagStart" > !!str< / span > < span class = "StringLit" > " < / span > < span class = "StringLit" > name" < / span >
< span class = "Punctuation" > :< / span > < span class = "TagStart" > !!str< / span > < span class = "StringLit" > " < / span > < span class = "StringLit" > Peter Pan" < / span > < span class = "Punctuation" > ,< / span >
< span class = "Punctuation" > ?< / span > < span class = "TagStart" > !!str< / span > < span class = "StringLit" > " < / span > < span class = "StringLit" > age" < / span >
< span class = "Punctuation" > :< / span > < span class = "TagStart" > !nim:system:int32< / span > < span class = "StringLit" > " < / span > < span class = "StringLit" > 12" < / span >
< span class = "Punctuation" > }< / span >
< span class = "Punctuation" > ]< / span > < / pre > < / td > < / tr > < / tbody > < / table >
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< h2 id = "dumping-reference-types-and-cyclic-structures" > Dumping reference types and cyclic structures< / h2 > < table class = "quickstart-example" > < thead > < tr > < th > code.nim< / th >
< th > out.yaml< / th > < / tr > < / thead > < tbody > < tr > < td > < pre class = "listing" > < span class = "Keyword" > import< / span > < span class = "Identifier" > yaml< / span >
< span class = "Keyword" > type< / span >
< span class = "Identifier" > Node< / span > < span class = "Operator" > =< / span > < span class = "Keyword" > ref< / span > < span class = "Identifier" > NodeObj< / span >
< span class = "Identifier" > NodeObj< / span > < span class = "Operator" > =< / span > < span class = "Keyword" > object< / span >
< span class = "Identifier" > name< / span > < span class = "Punctuation" > :< / span > < span class = "Identifier" > string< / span >
< span class = "Identifier" > left< / span > < span class = "Punctuation" > ,< / span > < span class = "Identifier" > right< / span > < span class = "Punctuation" > :< / span > < span class = "Identifier" > Node< / span >
< span class = "Keyword" > var< / span > < span class = "Identifier" > node1< / span > < span class = "Punctuation" > ,< / span > < span class = "Identifier" > node2< / span > < span class = "Punctuation" > ,< / span > < span class = "Identifier" > node3< / span > < span class = "Punctuation" > :< / span > < span class = "Identifier" > Node< / span >
< span class = "Identifier" > new< / span > < span class = "Punctuation" > (< / span > < span class = "Identifier" > node1< / span > < span class = "Punctuation" > )< / span > < span class = "Punctuation" > ;< / span > < span class = "Identifier" > new< / span > < span class = "Punctuation" > (< / span > < span class = "Identifier" > node2< / span > < span class = "Punctuation" > )< / span > < span class = "Punctuation" > ;< / span > < span class = "Identifier" > new< / span > < span class = "Punctuation" > (< / span > < span class = "Identifier" > node3< / span > < span class = "Punctuation" > )< / span >
< span class = "Identifier" > node1< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > name< / span > < span class = "Operator" > =< / span > < span class = "StringLit" > " Node 1" < / span >
< span class = "Identifier" > node2< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > name< / span > < span class = "Operator" > =< / span > < span class = "StringLit" > " Node 2" < / span >
< span class = "Identifier" > node3< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > name< / span > < span class = "Operator" > =< / span > < span class = "StringLit" > " Node 3" < / span >
< span class = "Identifier" > node1< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > left< / span > < span class = "Operator" > =< / span > < span class = "Identifier" > node2< / span >
< span class = "Identifier" > node1< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > right< / span > < span class = "Operator" > =< / span > < span class = "Identifier" > node3< / span >
< span class = "Identifier" > node2< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > right< / span > < span class = "Operator" > =< / span > < span class = "Identifier" > node3< / span >
< span class = "Identifier" > node3< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > left< / span > < span class = "Operator" > =< / span > < span class = "Identifier" > node1< / span >
< span class = "Keyword" > var< / span > < span class = "Identifier" > s< / span > < span class = "Operator" > =< / span > < span class = "Identifier" > newFileStream< / span > < span class = "Punctuation" > (< / span > < span class = "StringLit" > " out.yaml" < / span > < span class = "Punctuation" > ,< / span > < span class = "Identifier" > fmWrite< / span > < span class = "Punctuation" > )< / span >
< span class = "Identifier" > dump< / span > < span class = "Punctuation" > (< / span > < span class = "Identifier" > node1< / span > < span class = "Punctuation" > ,< / span > < span class = "Identifier" > s< / span > < span class = "Punctuation" > )< / span >
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< span class = "Identifier" > s< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > close< / span > < span class = "Punctuation" > (< / span > < span class = "Punctuation" > )< / span > < / pre > < / td > < td > < pre class = "listing" > < span class = "Directive" > %YAML 1.2< / span >
< span class = "Keyword" > ---< / span > < span class = "TagStart" > !nim:custom:NodeObj< / span > < span class = "Label" > & a< / span >
< span class = "StringLit" > name< / span > < span class = "Punctuation" > :< / span > < span class = "StringLit" > Node 1< / span >
< span class = "StringLit" > left< / span > < span class = "Punctuation" > :< / span >
< span class = "StringLit" > name< / span > < span class = "Punctuation" > :< / span > < span class = "StringLit" > Node 2< / span >
< span class = "StringLit" > left< / span > < span class = "Punctuation" > :< / span > < span class = "TagStart" > !!null< / span > < span class = "StringLit" > ~< / span >
< span class = "StringLit" > right< / span > < span class = "Punctuation" > :< / span > < span class = "Label" > & b< / span >
< span class = "StringLit" > name< / span > < span class = "Punctuation" > :< / span > < span class = "StringLit" > Node 3< / span >
< span class = "StringLit" > left< / span > < span class = "Punctuation" > :< / span > < span class = "Reference" > *a< / span >
< span class = "StringLit" > right< / span > < span class = "Punctuation" > :< / span > < span class = "TagStart" > !!null< / span > < span class = "StringLit" > ~< / span >
< span class = "StringLit" > right< / span > < span class = "Punctuation" > :< / span > < span class = "Reference" > *b< / span > < / pre > < / td > < / tr > < / tbody > < / table >
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< h2 id = "loading-reference-types-and-cyclic-structures" > Loading reference types and cyclic structures< / h2 > < table class = "quickstart-example" > < thead > < tr > < th > code.nim< / th >
< th > in.yaml< / th > < / tr > < / thead > < tbody > < tr > < td > < pre class = "listing" > < span class = "Keyword" > import< / span > < span class = "Identifier" > yaml< / span >
< span class = "Keyword" > type< / span >
< span class = "Identifier" > Node< / span > < span class = "Operator" > =< / span > < span class = "Keyword" > ref< / span > < span class = "Identifier" > NodeObj< / span >
< span class = "Identifier" > NodeObj< / span > < span class = "Operator" > =< / span > < span class = "Keyword" > object< / span >
< span class = "Identifier" > name< / span > < span class = "Punctuation" > :< / span > < span class = "Identifier" > string< / span >
< span class = "Identifier" > left< / span > < span class = "Punctuation" > ,< / span > < span class = "Identifier" > right< / span > < span class = "Punctuation" > :< / span > < span class = "Identifier" > Node< / span >
< span class = "Keyword" > var< / span > < span class = "Identifier" > node1< / span > < span class = "Punctuation" > :< / span > < span class = "Identifier" > Node< / span >
< span class = "Keyword" > var< / span > < span class = "Identifier" > s< / span > < span class = "Operator" > =< / span > < span class = "Identifier" > newFileStream< / span > < span class = "Punctuation" > (< / span > < span class = "StringLit" > " in.yaml" < / span > < span class = "Punctuation" > )< / span >
< span class = "Identifier" > load< / span > < span class = "Punctuation" > (< / span > < span class = "Identifier" > s< / span > < span class = "Punctuation" > ,< / span > < span class = "Identifier" > node1< / span > < span class = "Punctuation" > )< / span >
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< span class = "Identifier" > s< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > close< / span > < span class = "Punctuation" > (< / span > < span class = "Punctuation" > )< / span > < / pre > < / td > < td > < pre class = "listing" > < span class = "Directive" > %YAML 1.2< / span >
< span class = "Keyword" > ---< / span > < span class = "TagStart" > !nim:custom:NodeObj< / span > < span class = "Label" > & a< / span >
< span class = "StringLit" > name< / span > < span class = "Punctuation" > :< / span > < span class = "StringLit" > Node 1< / span >
< span class = "StringLit" > left< / span > < span class = "Punctuation" > :< / span >
< span class = "StringLit" > name< / span > < span class = "Punctuation" > :< / span > < span class = "StringLit" > Node 2< / span >
< span class = "StringLit" > left< / span > < span class = "Punctuation" > :< / span > < span class = "StringLit" > ~< / span >
< span class = "StringLit" > right< / span > < span class = "Punctuation" > :< / span > < span class = "Label" > & b< / span >
< span class = "StringLit" > name< / span > < span class = "Punctuation" > :< / span > < span class = "StringLit" > Node 3< / span >
< span class = "StringLit" > left< / span > < span class = "Punctuation" > :< / span > < span class = "Reference" > *a< / span >
< span class = "StringLit" > right< / span > < span class = "Punctuation" > :< / span > < span class = "StringLit" > ~< / span >
< span class = "StringLit" > right< / span > < span class = "Punctuation" > :< / span > < span class = "Reference" > *b< / span > < / pre > < / td > < / tr > < / tbody > < / table >
2016-03-20 23:00:15 +01:00
< h2 id = "defining-a-custom-tag-uri-for-a-type" > Defining a custom tag uri for a type< / h2 > < table class = "quickstart-example" > < thead > < tr > < th > code.nim< / th >
< th > out.yaml< / th > < / tr > < / thead > < tbody > < tr > < td > < pre class = "listing" > < span class = "Keyword" > import< / span > < span class = "Identifier" > yaml< / span >
< span class = "Keyword" > type< / span > < span class = "Identifier" > Mob< / span > < span class = "Operator" > =< / span > < span class = "Keyword" > object< / span >
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< span class = "Identifier" > level< / span > < span class = "Punctuation" > ,< / span > < span class = "Identifier" > experience< / span > < span class = "Punctuation" > :< / span > < span class = "Identifier" > int32< / span >
< span class = "Identifier" > drops< / span > < span class = "Punctuation" > :< / span > < span class = "Identifier" > seq< / span > < span class = "Punctuation" > [< / span > < span class = "Identifier" > string< / span > < span class = "Punctuation" > ]< / span >
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< span class = "Identifier" > setTagUriForType< / span > < span class = "Punctuation" > (< / span > < span class = "Identifier" > Mob< / span > < span class = "Punctuation" > ,< / span > < span class = "StringLit" > " !Mob" < / span > < span class = "Punctuation" > )< / span >
2016-03-21 21:16:05 +01:00
< span class = "Identifier" > setTagUriForType< / span > < span class = "Punctuation" > (< / span > < span class = "Identifier" > seq< / span > < span class = "Punctuation" > [< / span > < span class = "Identifier" > string< / span > < span class = "Punctuation" > ]< / span > < span class = "Punctuation" > ,< / span > < span class = "StringLit" > " !Drops" < / span > < span class = "Punctuation" > )< / span >
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< span class = "Keyword" > var< / span > < span class = "Identifier" > mob< / span > < span class = "Operator" > =< / span > < span class = "Identifier" > Mob< / span > < span class = "Punctuation" > (< / span > < span class = "Identifier" > level< / span > < span class = "Punctuation" > :< / span > < span class = "DecNumber" > 42< / span > < span class = "Punctuation" > ,< / span > < span class = "Identifier" > experience< / span > < span class = "Punctuation" > :< / span > < span class = "DecNumber" > 1800< / span > < span class = "Punctuation" > ,< / span > < span class = "Identifier" > drops< / span > < span class = "Punctuation" > :< / span >
< span class = "Operator" > @< / span > < span class = "Punctuation" > [< / span > < span class = "StringLit" > " Sword of Mob Slaying" < / span > < span class = "Punctuation" > ]< / span > < span class = "Punctuation" > )< / span >
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< span class = "Keyword" > var< / span > < span class = "Identifier" > s< / span > < span class = "Operator" > =< / span > < span class = "Identifier" > newFileStream< / span > < span class = "Punctuation" > (< / span > < span class = "StringLit" > " out.yaml" < / span > < span class = "Punctuation" > ,< / span > < span class = "Identifier" > fmWrite< / span > < span class = "Punctuation" > )< / span >
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< span class = "Identifier" > dump< / span > < span class = "Punctuation" > (< / span > < span class = "Identifier" > mob< / span > < span class = "Punctuation" > ,< / span > < span class = "Identifier" > s< / span > < span class = "Punctuation" > ,< / span >
< span class = "Identifier" > options< / span > < span class = "Operator" > =< / span > < span class = "Identifier" > defineOptions< / span > < span class = "Punctuation" > (< / span > < span class = "Identifier" > tagStyle< / span > < span class = "Operator" > =< / span > < span class = "Identifier" > tsAll< / span > < span class = "Punctuation" > )< / span > < span class = "Punctuation" > )< / span >
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< span class = "Identifier" > s< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > close< / span > < span class = "Punctuation" > (< / span > < span class = "Punctuation" > )< / span > < / pre > < / td > < td > < pre class = "listing" > < span class = "StringLit" > YAML 1.2< / span >
< span class = "Keyword" > ---< / span > < span class = "TagStart" > !Mob< / span >
< span class = "TagStart" > !nim:field< / span > < span class = "StringLit" > level< / span > < span class = "Punctuation" > :< / span > < span class = "TagStart" > !nim:system:int32< / span > < span class = "DecNumber" > 42< / span >
< span class = "TagStart" > !nim:field< / span > < span class = "StringLit" > experience< / span > < span class = "Punctuation" > :< / span > < span class = "TagStart" > !nim:system:int32< / span > < span class = "DecNumber" > 1800< / span >
< span class = "TagStart" > !nim:field< / span > < span class = "StringLit" > drops< / span > < span class = "Punctuation" > :< / span > < span class = "TagStart" > !Drops< / span > < span class = "Punctuation" > [< / span > < span class = "TagStart" > !!str< / span > < span class = "StringLit" > Sword of Mob Slaying< / span > < span class = "Punctuation" > ]< / span > < / pre > < / td > < / tr > < / tbody > < / table >
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< h2 id = "dumping-nim-objects-as-json" > Dumping Nim objects as JSON< / h2 > < table class = "quickstart-example" > < thead > < tr > < th > code.nim< / th >
< th > out.yaml< / th > < / tr > < / thead > < tbody > < tr > < td > < pre class = "listing" > < span class = "Keyword" > import< / span > < span class = "Identifier" > yaml< / span >
< span class = "Keyword" > type< / span > < span class = "Identifier" > Person< / span > < span class = "Operator" > =< / span > < span class = "Keyword" > object< / span >
< span class = "Identifier" > name< / span > < span class = "Punctuation" > :< / span > < span class = "Identifier" > string< / span >
< span class = "Identifier" > age< / span > < span class = "Punctuation" > :< / span > < span class = "Identifier" > int32< / span >
< span class = "Keyword" > var< / span > < span class = "Identifier" > personList< / span > < span class = "Operator" > =< / span > < span class = "Identifier" > newSeq< / span > < span class = "Punctuation" > [< / span > < span class = "Identifier" > Person< / span > < span class = "Punctuation" > ]< / span > < span class = "Punctuation" > (< / span > < span class = "Punctuation" > )< / span >
< span class = "Identifier" > personList< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > add< / span > < span class = "Punctuation" > (< / span > < span class = "Identifier" > Person< / span > < span class = "Punctuation" > (< / span > < span class = "Identifier" > name< / span > < span class = "Punctuation" > :< / span > < span class = "StringLit" > " Karl Koch" < / span > < span class = "Punctuation" > ,< / span > < span class = "Identifier" > age< / span > < span class = "Punctuation" > :< / span > < span class = "DecNumber" > 23< / span > < span class = "Punctuation" > )< / span > < span class = "Punctuation" > )< / span >
< span class = "Identifier" > personList< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > add< / span > < span class = "Punctuation" > (< / span > < span class = "Identifier" > Person< / span > < span class = "Punctuation" > (< / span > < span class = "Identifier" > name< / span > < span class = "Punctuation" > :< / span > < span class = "StringLit" > " Peter Pan" < / span > < span class = "Punctuation" > ,< / span > < span class = "Identifier" > age< / span > < span class = "Punctuation" > :< / span > < span class = "DecNumber" > 12< / span > < span class = "Punctuation" > )< / span > < span class = "Punctuation" > )< / span >
< span class = "Keyword" > var< / span > < span class = "Identifier" > s< / span > < span class = "Operator" > =< / span > < span class = "Identifier" > newFileStream< / span > < span class = "Punctuation" > (< / span > < span class = "StringLit" > " out.yaml" < / span > < span class = "Punctuation" > ,< / span > < span class = "Identifier" > fmWrite< / span > < span class = "Punctuation" > )< / span >
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< span class = "Identifier" > dump< / span > < span class = "Punctuation" > (< / span > < span class = "Identifier" > personList< / span > < span class = "Punctuation" > ,< / span > < span class = "Identifier" > s< / span > < span class = "Punctuation" > ,< / span >
< span class = "Identifier" > options< / span > < span class = "Operator" > =< / span > < span class = "Identifier" > defineOptions< / span > < span class = "Punctuation" > (< / span > < span class = "Identifier" > style< / span > < span class = "Operator" > =< / span > < span class = "Identifier" > psJson< / span > < span class = "Punctuation" > )< / span > < span class = "Punctuation" > )< / span >
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< span class = "Identifier" > s< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > close< / span > < span class = "Punctuation" > (< / span > < span class = "Punctuation" > )< / span > < / pre > < / td >
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< td > < pre class = "listing" > < span class = "Punctuation" > [< / span >
< span class = "Punctuation" > {< / span >
< span class = "StringLit" > " < / span > < span class = "StringLit" > name" < / span > < span class = "Punctuation" > :< / span > < span class = "StringLit" > " < / span > < span class = "StringLit" > Karl Koch" < / span > < span class = "Punctuation" > ,< / span >
< span class = "StringLit" > " < / span > < span class = "StringLit" > age" < / span > < span class = "Punctuation" > :< / span > < span class = "DecNumber" > 23< / span >
< span class = "Punctuation" > }< / span > < span class = "Punctuation" > ,< / span >
< span class = "Punctuation" > {< / span >
< span class = "StringLit" > " < / span > < span class = "StringLit" > name" < / span > < span class = "Punctuation" > :< / span > < span class = "StringLit" > " < / span > < span class = "StringLit" > Peter Pan" < / span > < span class = "Punctuation" > ,< / span >
< span class = "StringLit" > " < / span > < span class = "StringLit" > age" < / span > < span class = "Punctuation" > :< / span > < span class = "DecNumber" > 12< / span >
< span class = "Punctuation" > }< / span >
< span class = "Punctuation" > ]< / span > < / pre > < / td > < / tr > < / tbody > < / table >
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< h2 id = "loading-nim-objects-from-json" > Loading Nim objects from JSON< / h2 > < table class = "quickstart-example" > < thead > < tr > < th > code.nim< / th >
< th > in.yaml< / th > < / tr > < / thead > < tbody > < tr > < td > < pre class = "listing" > < span class = "Keyword" > import< / span > < span class = "Identifier" > yaml< / span >
< span class = "Keyword" > type< / span > < span class = "Identifier" > Person< / span > < span class = "Operator" > =< / span > < span class = "Keyword" > object< / span >
< span class = "Identifier" > name< / span > < span class = "Punctuation" > :< / span > < span class = "Identifier" > string< / span >
< span class = "Identifier" > age< / span > < span class = "Punctuation" > :< / span > < span class = "Identifier" > int32< / span >
< span class = "Keyword" > var< / span > < span class = "Identifier" > personList< / span > < span class = "Punctuation" > :< / span > < span class = "Identifier" > seq< / span > < span class = "Punctuation" > [< / span > < span class = "Identifier" > Person< / span > < span class = "Punctuation" > ]< / span >
< span class = "Keyword" > var< / span > < span class = "Identifier" > s< / span > < span class = "Operator" > =< / span > < span class = "Identifier" > newFileStream< / span > < span class = "Punctuation" > (< / span > < span class = "StringLit" > " in.yaml" < / span > < span class = "Punctuation" > )< / span >
< span class = "Identifier" > load< / span > < span class = "Punctuation" > (< / span > < span class = "Identifier" > s< / span > < span class = "Punctuation" > ,< / span > < span class = "Identifier" > personList< / span > < span class = "Punctuation" > )< / span >
< span class = "Identifier" > s< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > close< / span > < span class = "Punctuation" > (< / span > < span class = "Punctuation" > )< / span > < / pre > < / td >
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< td > < pre class = "listing" > < span class = "Punctuation" > [< / span >
< span class = "Punctuation" > {< / span >
< span class = "StringLit" > " < / span > < span class = "StringLit" > name" < / span > < span class = "Punctuation" > :< / span > < span class = "StringLit" > " < / span > < span class = "StringLit" > Karl Koch" < / span > < span class = "Punctuation" > ,< / span >
< span class = "StringLit" > " < / span > < span class = "StringLit" > age" < / span > < span class = "Punctuation" > :< / span > < span class = "DecNumber" > 23< / span >
< span class = "Punctuation" > }< / span > < span class = "Punctuation" > ,< / span >
< span class = "Punctuation" > {< / span >
< span class = "StringLit" > " < / span > < span class = "StringLit" > name" < / span > < span class = "Punctuation" > :< / span > < span class = "StringLit" > " < / span > < span class = "StringLit" > Peter Pan" < / span > < span class = "Punctuation" > ,< / span >
< span class = "StringLit" > " < / span > < span class = "StringLit" > age" < / span > < span class = "Punctuation" > :< / span > < span class = "DecNumber" > 12< / span >
< span class = "Punctuation" > }< / span >
< span class = "Punctuation" > ]< / span > < / pre > < / td > < / tr > < / tbody > < / table >
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< h2 id = "processing-a-sequence-of-heterogeneous-items" > Processing a Sequence of Heterogeneous Items< / h2 > < table class = "quickstart-example" > < thead > < tr > < th > code.nim< / th >
< th > in.yaml< / th > < / tr > < / thead > < tbody > < tr > < td > < pre class = "listing" > < span class = "Keyword" > import< / span > < span class = "Identifier" > yaml< / span >
< span class = "Keyword" > type< / span > < span class = "Identifier" > Person< / span > < span class = "Operator" > =< / span > < span class = "Keyword" > object< / span >
< span class = "Identifier" > name< / span > < span class = "Punctuation" > :< / span > < span class = "Identifier" > string< / span >
< span class = "Identifier" > setTagUriForType< / span > < span class = "Punctuation" > (< / span > < span class = "Identifier" > Person< / span > < span class = "Punctuation" > ,< / span > < span class = "StringLit" > " !nim:demo:Person" < / span > < span class = "Punctuation" > ,< / span >
< span class = "Identifier" > yTagPerson< / span > < span class = "Punctuation" > )< / span >
< span class = "Keyword" > var< / span >
< span class = "Identifier" > s< / span > < span class = "Operator" > =< / span > < span class = "Identifier" > newFileStream< / span > < span class = "Punctuation" > (< / span > < span class = "StringLit" > " in.yaml" < / span > < span class = "Punctuation" > ,< / span > < span class = "Identifier" > fmRead< / span > < span class = "Punctuation" > )< / span >
< span class = "Identifier" > context< / span > < span class = "Operator" > =< / span > < span class = "Identifier" > newConstructionContext< / span > < span class = "Punctuation" > (< / span > < span class = "Punctuation" > )< / span >
< span class = "Identifier" > parser< / span > < span class = "Operator" > =< / span > < span class = "Identifier" > newYamlParser< / span > < span class = "Punctuation" > (< / span > < span class = "Identifier" > serializationTagLibrary< / span > < span class = "Punctuation" > )< / span >
< span class = "Identifier" > events< / span > < span class = "Operator" > =< / span > < span class = "Identifier" > parser< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > parse< / span > < span class = "Punctuation" > (< / span > < span class = "Identifier" > s< / span > < span class = "Punctuation" > )< / span >
< span class = "Identifier" > assert< / span > < span class = "Identifier" > events< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > next< / span > < span class = "Punctuation" > (< / span > < span class = "Punctuation" > )< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > kind< / span > < span class = "Operator" > ==< / span > < span class = "Identifier" > yamlStartDoc< / span >
< span class = "Identifier" > assert< / span > < span class = "Identifier" > events< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > next< / span > < span class = "Punctuation" > (< / span > < span class = "Punctuation" > )< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > kind< / span > < span class = "Operator" > ==< / span > < span class = "Identifier" > yamlStartSeq< / span >
< span class = "Keyword" > var< / span > < span class = "Identifier" > nextEvent< / span > < span class = "Operator" > =< / span > < span class = "Identifier" > events< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > peek< / span > < span class = "Punctuation" > (< / span > < span class = "Punctuation" > )< / span >
< span class = "Keyword" > while< / span > < span class = "Identifier" > nextEvent< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > kind< / span > < span class = "Operator" > !=< / span > < span class = "Identifier" > yamlEndSeq< / span > < span class = "Punctuation" > :< / span >
< span class = "Keyword" > var< / span > < span class = "Identifier" > curTag< / span > < span class = "Operator" > =< / span > < span class = "Identifier" > nextEvent< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > tag< / span > < span class = "Punctuation" > (< / span > < span class = "Punctuation" > )< / span >
< span class = "Keyword" > if< / span > < span class = "Identifier" > curTag< / span > < span class = "Operator" > ==< / span > < span class = "Identifier" > yTagQuestionMark< / span > < span class = "Punctuation" > :< / span >
< span class = "Comment" > # we only support implicitly tagged scalar events< / span >
< span class = "Identifier" > assert< / span > < span class = "Identifier" > nextEvent< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > kind< / span > < span class = "Operator" > ==< / span > < span class = "Identifier" > yamlScalar< / span >
< span class = "Keyword" > case< / span > < span class = "Identifier" > guessType< / span > < span class = "Punctuation" > (< / span > < span class = "Identifier" > nextEvent< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > scalarContent< / span > < span class = "Punctuation" > )< / span >
< span class = "Keyword" > of< / span > < span class = "Identifier" > yTypeInteger< / span > < span class = "Punctuation" > :< / span > < span class = "Identifier" > curTag< / span > < span class = "Operator" > =< / span > < span class = "Identifier" > yTagInteger< / span >
< span class = "Keyword" > of< / span > < span class = "Identifier" > yTypeBoolTrue< / span > < span class = "Punctuation" > ,< / span > < span class = "Identifier" > yTypeBoolFalse< / span > < span class = "Punctuation" > :< / span >
< span class = "Identifier" > curTag< / span > < span class = "Operator" > =< / span > < span class = "Identifier" > yTagBoolean< / span >
< span class = "Keyword" > of< / span > < span class = "Identifier" > yTypeUnknown< / span > < span class = "Punctuation" > :< / span > < span class = "Identifier" > curTag< / span > < span class = "Operator" > =< / span > < span class = "Identifier" > yTagString< / span >
< span class = "Keyword" > else< / span > < span class = "Punctuation" > :< / span > < span class = "Identifier" > assert< / span > < span class = "Identifier" > false< / span > < span class = "Punctuation" > ,< / span > < span class = "StringLit" > " Type not supported!" < / span >
< span class = "Keyword" > elif< / span > < span class = "Identifier" > curTag< / span > < span class = "Operator" > ==< / span > < span class = "Identifier" > yTagExclamationMark< / span > < span class = "Punctuation" > :< / span >
< span class = "Identifier" > curTag< / span > < span class = "Operator" > =< / span > < span class = "Identifier" > yTagString< / span >
< span class = "Keyword" > case< / span > < span class = "Identifier" > curTag< / span >
< span class = "Keyword" > of< / span > < span class = "Identifier" > yTagString< / span > < span class = "Punctuation" > :< / span >
< span class = "Keyword" > var< / span > < span class = "Identifier" > s< / span > < span class = "Punctuation" > :< / span > < span class = "Identifier" > string< / span >
< span class = "Identifier" > events< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > constructChild< / span > < span class = "Punctuation" > (< / span > < span class = "Identifier" > context< / span > < span class = "Punctuation" > ,< / span > < span class = "Identifier" > s< / span > < span class = "Punctuation" > )< / span >
< span class = "Identifier" > echo< / span > < span class = "StringLit" > " got string: " < / span > < span class = "Punctuation" > ,< / span > < span class = "Identifier" > s< / span >
< span class = "Keyword" > of< / span > < span class = "Identifier" > yTagInteger< / span > < span class = "Punctuation" > :< / span >
< span class = "Keyword" > var< / span > < span class = "Identifier" > i< / span > < span class = "Punctuation" > :< / span > < span class = "Identifier" > int32< / span >
< span class = "Identifier" > events< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > constructChild< / span > < span class = "Punctuation" > (< / span > < span class = "Identifier" > context< / span > < span class = "Punctuation" > ,< / span > < span class = "Identifier" > i< / span > < span class = "Punctuation" > )< / span >
< span class = "Identifier" > echo< / span > < span class = "StringLit" > " got integer: " < / span > < span class = "Punctuation" > ,< / span > < span class = "Identifier" > i< / span >
< span class = "Keyword" > of< / span > < span class = "Identifier" > yTagBoolean< / span > < span class = "Punctuation" > :< / span >
< span class = "Keyword" > var< / span > < span class = "Identifier" > b< / span > < span class = "Punctuation" > :< / span > < span class = "Identifier" > bool< / span >
< span class = "Identifier" > events< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > constructChild< / span > < span class = "Punctuation" > (< / span > < span class = "Identifier" > context< / span > < span class = "Punctuation" > ,< / span > < span class = "Identifier" > b< / span > < span class = "Punctuation" > )< / span >
< span class = "Identifier" > echo< / span > < span class = "StringLit" > " got boolean: " < / span > < span class = "Punctuation" > ,< / span > < span class = "Identifier" > b< / span >
< span class = "Keyword" > else< / span > < span class = "Punctuation" > :< / span >
< span class = "Comment" > # non-standard tag ids are not available< / span >
< span class = "Comment" > # at compile time< / span >
< span class = "Keyword" > if< / span > < span class = "Identifier" > curTag< / span > < span class = "Operator" > ==< / span > < span class = "Identifier" > yTagPerson< / span > < span class = "Punctuation" > :< / span >
< span class = "Keyword" > var< / span > < span class = "Identifier" > p< / span > < span class = "Punctuation" > :< / span > < span class = "Identifier" > Person< / span >
< span class = "Identifier" > events< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > constructChild< / span > < span class = "Punctuation" > (< / span > < span class = "Identifier" > context< / span > < span class = "Punctuation" > ,< / span > < span class = "Identifier" > p< / span > < span class = "Punctuation" > )< / span >
< span class = "Identifier" > echo< / span > < span class = "StringLit" > " got Person with name: " < / span > < span class = "Punctuation" > ,< / span > < span class = "Identifier" > p< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > name< / span >
< span class = "Keyword" > else< / span > < span class = "Punctuation" > :< / span > < span class = "Identifier" > assert< / span > < span class = "Identifier" > false< / span > < span class = "Punctuation" > ,< / span > < span class = "StringLit" > " unsupported tag: " < / span > < span class = "Operator" > & < / span > < span class = "Operator" > $< / span > < span class = "Identifier" > curTag< / span >
< span class = "Identifier" > nextEvent< / span > < span class = "Operator" > =< / span > < span class = "Identifier" > events< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > peek< / span > < span class = "Punctuation" > (< / span > < span class = "Punctuation" > )< / span >
< span class = "Identifier" > assert< / span > < span class = "Identifier" > events< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > next< / span > < span class = "Punctuation" > (< / span > < span class = "Punctuation" > )< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > kind< / span > < span class = "Operator" > ==< / span > < span class = "Identifier" > yamlEndSeq< / span >
< span class = "Identifier" > assert< / span > < span class = "Identifier" > events< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > next< / span > < span class = "Punctuation" > (< / span > < span class = "Punctuation" > )< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > kind< / span > < span class = "Operator" > ==< / span > < span class = "Identifier" > yamlEndDoc< / span >
< span class = "Identifier" > assert< / span > < span class = "Identifier" > events< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > finished< / span > < span class = "Punctuation" > (< / span > < span class = "Punctuation" > )< / span >
< span class = "Identifier" > s< / span > < span class = "Operator" > .< / span > < span class = "Identifier" > close< / span > < span class = "Punctuation" > (< / span > < span class = "Punctuation" > )< / span > < / pre > < / td >
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< td > < pre class = "listing" > < span class = "Directive" > %YAML 1.2< / span >
< span class = "Keyword" > ---< / span > < span class = "TagStart" > !!seq< / span >
< span class = "Punctuation" > -< / span > < span class = "StringLit" > this is a string< / span >
< span class = "Punctuation" > -< / span > < span class = "DecNumber" > 42< / span >
< span class = "Punctuation" > -< / span > < span class = "StringLit" > false< / span >
< span class = "Punctuation" > -< / span > < span class = "TagStart" > !!str< / span > < span class = "DecNumber" > 23< / span >
< span class = "Punctuation" > -< / span > < span class = "TagStart" > !nim:demo:Person< / span > < span class = "Punctuation" > {< / span > < span class = "StringLit" > name< / span > < span class = "Punctuation" > :< / span > < span class = "StringLit" > Trillian< / span > < span class = "Punctuation" > }< / span > < / pre > < / td > < / tr > < / tbody > < / table >
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< div class = "row" >
< div class = "twelve-columns footer" >
< span class = "nim-sprite" > < / span >
< br / >
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< small > Made with Nim. Generated: 2016-04-01 22:08:47 UTC< / small >
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< / div >
< / div >
< / div >
< / article >
< / body >
< / html >
