mirror of https://github.com/status-im/consul.git
67 lines
2.1 KiB
Go
67 lines
2.1 KiB
Go
/*
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Objx - Go package for dealing with maps, slices, JSON and other data.
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Overview
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Objx provides the `objx.Map` type, which is a `map[string]interface{}` that exposes
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a powerful `Get` method (among others) that allows you to easily and quickly get
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access to data within the map, without having to worry too much about type assertions,
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missing data, default values etc.
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Pattern
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Objx uses a preditable pattern to make access data from within `map[string]interface{}` easy.
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Call one of the `objx.` functions to create your `objx.Map` to get going:
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m, err := objx.FromJSON(json)
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NOTE: Any methods or functions with the `Must` prefix will panic if something goes wrong,
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the rest will be optimistic and try to figure things out without panicking.
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Use `Get` to access the value you're interested in. You can use dot and array
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notation too:
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m.Get("places[0].latlng")
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Once you have sought the `Value` you're interested in, you can use the `Is*` methods to determine its type.
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if m.Get("code").IsStr() { // Your code... }
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Or you can just assume the type, and use one of the strong type methods to extract the real value:
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m.Get("code").Int()
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If there's no value there (or if it's the wrong type) then a default value will be returned,
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or you can be explicit about the default value.
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Get("code").Int(-1)
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If you're dealing with a slice of data as a value, Objx provides many useful methods for iterating,
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manipulating and selecting that data. You can find out more by exploring the index below.
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Reading data
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A simple example of how to use Objx:
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// Use MustFromJSON to make an objx.Map from some JSON
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m := objx.MustFromJSON(`{"name": "Mat", "age": 30}`)
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// Get the details
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name := m.Get("name").Str()
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age := m.Get("age").Int()
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// Get their nickname (or use their name if they don't have one)
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nickname := m.Get("nickname").Str(name)
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Ranging
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Since `objx.Map` is a `map[string]interface{}` you can treat it as such.
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For example, to `range` the data, do what you would expect:
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m := objx.MustFromJSON(json)
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for key, value := range m {
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// Your code...
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}
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*/
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package objx
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