npm package: @stdlib/ndarray-base-dtype-char
Description: Return the single letter character abbreviation for an underlying array data type.
Author: The Stdlib Authors
Latest version: 0.3.1

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# dtypeChar

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> Return the single letter abbreviation for an underlying [array data type][@stdlib/ndarray/dtypes].

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</section>

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<section class="installation">

## Installation

```bash
npm install @stdlib/ndarray-base-dtype-char
```

</section>

<section class="usage">

## Usage

```javascript
var dtypeChar = require( '@stdlib/ndarray-base-dtype-char' );
```

#### dtypeChar( \[dtype] )

Returns the single letter character abbreviation for an underlying [array data type][@stdlib/ndarray/dtypes].

```javascript
var ch = dtypeChar( 'float64' );
// returns 'd'

ch = dtypeChar( 'generic' );
// returns 'o'
```

If provided an unknown or unsupported data type, the function returns `null`.

```javascript
var ch = dtypeChar( 'foobar' );
// returns null
```

If not provided a [data type][@stdlib/ndarray/dtypes] value, the function returns an object mapping [data type][@stdlib/ndarray/dtypes] strings to single letter character abbreviations.

```javascript
var obj = dtypeChar();
// returns {...}
```

</section>

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<section class="examples">

## Examples

<!-- eslint no-undef: "error" -->

```javascript
var logEachMap = require( '@stdlib/console-log-each-map' );
var dtypeChar = require( '@stdlib/ndarray-base-dtype-char' );

var dtypes = [
    'float64',
    'float32',
    'int8',
    'uint8',
    'uint8c',
    'int16',
    'uint16',
    'int32',
    'uint32',
    'binary',
    'generic',
    'foobar'
];

logEachMap( '%s => %s', dtypes, dtypeChar );
```

</section>

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* * *

## Notice

This package is part of [stdlib][stdlib], a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.

For more information on the project, filing bug reports and feature requests, and guidance on how to develop [stdlib][stdlib], see the main project [repository][stdlib].

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---

## License

See [LICENSE][stdlib-license].


## Copyright

Copyright &copy; 2016-2026. The Stdlib [Authors][stdlib-authors].

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