47 lines
1.0 KiB
Markdown
47 lines
1.0 KiB
Markdown
---
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title: strings.containsStr() function
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description: The strings.containsStr() function reports whether a string contains a specified substring.
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aliases:
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- /influxdb/v2.0/reference/flux/functions/strings/containsstr/
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- /influxdb/v2.0/reference/flux/stdlib/strings/containsstr/
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- /influxdb/cloud/reference/flux/stdlib/strings/containsstr/
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menu:
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flux_0_x_ref:
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name: strings.containsStr
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parent: strings
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weight: 301
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related:
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- /flux/v0.x/stdlib/strings/containsany
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introduced: 0.18.0
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---
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The `strings.containsStr()` function reports whether a string contains a specified substring.
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_**Output data type:** Boolean_
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```js
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import "strings"
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strings.containsStr(v: "This and that", substr: "and")
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// returns true
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```
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## Parameters
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### v {data-type="string"}
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The string value to search.
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### substr {data-type="string"}
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The substring value to search for.
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## Examples
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###### Report if a string contains a specific substring
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```js
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import "strings"
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data
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|> map(fn: (r) => ({r with _value: strings.containsStr(v: r.author, substr: "John")}))
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```
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