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doc: improve in documentation for maps (#17918)

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Artem Yurchenko 2023-04-09 13:43:13 +02:00 committed by GitHub
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@ -1762,10 +1762,17 @@ To do the opposite, use `!in`.
nums := [1, 2, 3] nums := [1, 2, 3]
println(1 in nums) // true println(1 in nums) // true
println(4 !in nums) // true println(4 !in nums) // true
```
> **Note**
> `in` checks if map contains a key, not a value.
```v
m := { m := {
'one': 1 'one': 1
'two': 2 'two': 2
} }
println('one' in m) // true println('one' in m) // true
println('three' !in m) // true println('three' !in m) // true
``` ```