48 lines
850 B
Markdown
48 lines
850 B
Markdown
---
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title: strings.toLower() function
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description: The strings.toLower() function converts a string to lowercase.
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aliases:
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- /v2.0/reference/flux/functions/strings/tolower/
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menu:
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v2_0_ref:
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name: strings.toLower
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parent: Strings
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weight: 301
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related:
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- /v2.0/reference/flux/stdlib/strings/totitle
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- /v2.0/reference/flux/stdlib/strings/toupper
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- /v2.0/reference/flux/stdlib/strings/title
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---
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The `strings.toLower()` function converts a string to lowercase.
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_**Output data type:** String_
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```js
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import "strings"
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strings.toLower(v: "KOALA")
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// returns "koala"
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```
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## Parameters
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### v
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The string value to convert.
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_**Data type:** String_
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## Examples
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###### Convert all values of a column to lower case
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```js
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import "strings"
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data
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|> map(fn: (r) => ({
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r with exclamation: strings.toLower(v: r.exclamation)
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})
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)
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```
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