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38 lines
648 B
Markdown
38 lines
648 B
Markdown
---
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title: collections.In
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linkTitle: in
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description: Reports whether an element is in an array or slice, or if a substring is in a string.
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keywords: []
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menu:
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docs:
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parent: functions
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function:
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aliases: [in]
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returnType: bool
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signatures: [collections.In SET ITEM]
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relatedFunctions:
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- collections.Slice
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aliases: [/functions/in]
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---
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```go-html-template
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{{ $s := slice "a" "b" "c" }}
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{{ in $s "b" }} → true
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```
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```go-html-template
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{{ $s := slice 1 2 3 }}
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{{ in $s 2 }} → true
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```
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```go-html-template
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{{ $s := slice 1.11 2.22 3.33 }}
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{{ in $s 2.22 }} → true
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```
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```go-html-template
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{{ $s := "abc" }}
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{{ in $s "b" }} → true
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```
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