108 lines
3.1 KiB
Markdown
108 lines
3.1 KiB
Markdown
---
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title: strings.trimSpace() function
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description: >
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`strings.trimSpace()` removes leading and trailing spaces from a string.
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menu:
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flux_0_x_ref:
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name: strings.trimSpace
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parent: strings
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identifier: strings/trimSpace
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weight: 101
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---
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<!------------------------------------------------------------------------------
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IMPORTANT: This page was generated from comments in the Flux source code. Any
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edits made directly to this page will be overwritten the next time the
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documentation is generated.
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To make updates to this documentation, update the function comments above the
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function definition in the Flux source code:
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https://github.com/influxdata/flux/blob/master/stdlib/strings/strings.flux#L140-L140
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Contributing to Flux: https://github.com/influxdata/flux#contributing
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Fluxdoc syntax: https://github.com/influxdata/flux/blob/master/docs/fluxdoc.md
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------------------------------------------------------------------------------->
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`strings.trimSpace()` removes leading and trailing spaces from a string.
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##### Function type signature
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```js
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(v: string) => string
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```
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{{% caption %}}For more information, see [Function type signatures](/flux/v0.x/function-type-signatures/).{{% /caption %}}
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## Parameters
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### v
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({{< req >}})
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String to remove spaces from.
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## Examples
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### Trim leading and trailing spaces from all values in a column
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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.trimSpace(v: r._value)}))
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```
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{{< expand-wrapper >}}
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{{% expand "View example input and ouput" %}}
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#### Input data
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| _time | _value | *tag |
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| -------------------- | ----------------- | ---- |
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| 2021-01-01T00:00:00Z | smpl_g9qczs | t1 |
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| 2021-01-01T00:00:10Z | smpl_0mgv9n | t1 |
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| 2021-01-01T00:00:20Z | smpl_phw664 | t1 |
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| 2021-01-01T00:00:30Z | smpl_guvzy4 | t1 |
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| 2021-01-01T00:00:40Z | smpl_5v3cce | t1 |
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| 2021-01-01T00:00:50Z | smpl_s9fmgy | t1 |
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| _time | _value | *tag |
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| -------------------- | ----------------- | ---- |
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| 2021-01-01T00:00:00Z | smpl_b5eida | t2 |
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| 2021-01-01T00:00:10Z | smpl_eu4oxp | t2 |
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| 2021-01-01T00:00:20Z | smpl_5g7tz4 | t2 |
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| 2021-01-01T00:00:30Z | smpl_sox1ut | t2 |
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| 2021-01-01T00:00:40Z | smpl_wfm757 | t2 |
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| 2021-01-01T00:00:50Z | smpl_dtn2bv | t2 |
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#### Output data
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| _time | _value | *tag |
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| -------------------- | ----------- | ---- |
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| 2021-01-01T00:00:00Z | smpl_g9qczs | t1 |
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| 2021-01-01T00:00:10Z | smpl_0mgv9n | t1 |
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| 2021-01-01T00:00:20Z | smpl_phw664 | t1 |
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| 2021-01-01T00:00:30Z | smpl_guvzy4 | t1 |
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| 2021-01-01T00:00:40Z | smpl_5v3cce | t1 |
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| 2021-01-01T00:00:50Z | smpl_s9fmgy | t1 |
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| _time | _value | *tag |
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| -------------------- | ----------- | ---- |
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| 2021-01-01T00:00:00Z | smpl_b5eida | t2 |
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| 2021-01-01T00:00:10Z | smpl_eu4oxp | t2 |
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| 2021-01-01T00:00:20Z | smpl_5g7tz4 | t2 |
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| 2021-01-01T00:00:30Z | smpl_sox1ut | t2 |
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| 2021-01-01T00:00:40Z | smpl_wfm757 | t2 |
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| 2021-01-01T00:00:50Z | smpl_dtn2bv | t2 |
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{{% /expand %}}
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{{< /expand-wrapper >}}
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