---
title: strings.equalFold() function
description: strings.equalFold() reports whether two UTF-8 strings are equal under Unicode case-folding.
url: https://docs.influxdata.com/flux/v0/stdlib/strings/equalfold/
estimated_tokens: 520
product: Flux
version: v0
publisher: InfluxData
canonical: https://docs.influxdata.com/flux/v0/stdlib/strings/equalfold/
date: '2024-04-08T16:01:02-06:00'
lastmod: '2024-04-08T16:01:02-06:00'
---

* Flux 0.18.0+

InfluxDB support

`strings.equalFold()` reports whether two UTF-8 strings are equal under Unicode case-folding.

##### Function type signature

```js
(t: string, v: string) => bool
```

For more information, see [Function type signatures](/flux/v0/function-type-signatures/).

## Parameters

### v

(Required)
String value to compare.

### t

(Required)
String value to compare against.

## Examples

### Ignore case when comparing two strings

```js
import "strings"

data
    |> map(fn: (r) => ({r with same: strings.equalFold(v: r.string1, t: r.string2)}))
```

[](#view-example-input-and-output)

View example input and output

#### Input data

|        time        | string1  | string2  |
|--------------------|----------|----------|
|2022-01-01T00:00:00Z|RJqcVGNlcJ|rjQCvGNLCj|
|2022-01-01T00:01:00Z|hBumdSljCQ|unfbcNAXUA|
|2022-01-01T00:02:00Z|ITcHyLZuqu|KKtCcRHsKj|
|2022-01-01T00:03:00Z|HyXdjvrjgp|hyxDJvrJGP|
|2022-01-01T00:04:00Z|SVepvUBAVx|GuKKjuGsyI|

#### Output data

|same | string1  | string2  |        time        |
|-----|----------|----------|--------------------|
|true |RJqcVGNlcJ|rjQCvGNLCj|2022-01-01T00:00:00Z|
|false|hBumdSljCQ|unfbcNAXUA|2022-01-01T00:01:00Z|
|false|ITcHyLZuqu|KKtCcRHsKj|2022-01-01T00:02:00Z|
|true |HyXdjvrjgp|hyxDJvrJGP|2022-01-01T00:03:00Z|
|false|SVepvUBAVx|GuKKjuGsyI|2022-01-01T00:04:00Z|
| time | string1 | string2 |
| --- | --- | --- |
| time | string1 | string2 |
| 2022-01-01T00:00:00Z | RJqcVGNlcJ | rjQCvGNLCj |
| 2022-01-01T00:01:00Z | hBumdSljCQ | unfbcNAXUA |
| 2022-01-01T00:02:00Z | ITcHyLZuqu | KKtCcRHsKj |
| 2022-01-01T00:03:00Z | HyXdjvrjgp | hyxDJvrJGP |
| 2022-01-01T00:04:00Z | SVepvUBAVx | GuKKjuGsyI |

| same | string1 | string2 | time |
| --- | --- | --- | --- |
| same | string1 | string2 | time |
| true | RJqcVGNlcJ | rjQCvGNLCj | 2022-01-01T00:00:00Z |
| false | hBumdSljCQ | unfbcNAXUA | 2022-01-01T00:01:00Z |
| false | ITcHyLZuqu | KKtCcRHsKj | 2022-01-01T00:02:00Z |
| true | HyXdjvrjgp | hyxDJvrJGP | 2022-01-01T00:03:00Z |
| false | SVepvUBAVx | GuKKjuGsyI | 2022-01-01T00:04:00Z |