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33 lines
728 B
Markdown
33 lines
728 B
Markdown
---
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title: in
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linktitle:
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description: Checks if an element is in an array or slice--or a substring in a string---and returns a boolean.
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godocref:
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date: 2017-02-01
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publishdate: 2017-02-01
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lastmod: 2017-02-01
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categories: [functions]
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menu:
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docs:
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parent: "functions"
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keywords: [strings]
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signature: ["in SET ITEM"]
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workson: []
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hugoversion:
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relatedfuncs: []
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deprecated: false
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aliases: []
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---
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The elements supported are strings, integers and floats, although only float64 will match as expected.
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In addition, `in` can also check if a substring exists in a string.
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```
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{{ if in .Params.tags "Git" }}Follow me on GitHub!{{ end }}
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```
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```
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{{ if in "this string contains a substring" "substring" }}Substring found!{{ end }}
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```
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