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Re-introduce placeholder

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Tanguy 2022-06-20 15:03:55 +02:00
parent b4bed3ff52
commit ab4d65ac83
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1 changed files with 4 additions and 1 deletions
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questionable/binding.nim
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@ -1,12 +1,15 @@
import std/options import std/options
import std/macros import std/macros
proc placeholder(T: type): T =
discard
template questionableUnpack*[T](expression: Option[T]): (T, bool) = template questionableUnpack*[T](expression: Option[T]): (T, bool) =
## Used internally ## Used internally
let option = expression let option = expression
type T = typeof(option.unsafeGet()) type T = typeof(option.unsafeGet())
let res = if option.isSome: option.unsafeGet() else: default(T) let res = if option.isSome: option.unsafeGet() else: placeholder(T)
(res, option.isSome) (res, option.isSome)
macro `=?`*(name, expression): bool = macro `=?`*(name, expression): bool =