npm package: @stdlib/ndarray-base-dtype-chars
Description: List of ndarray data type single letter character abbreviations.
Author: The Stdlib Authors
Latest version: 0.1.1

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# dtypeChars

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> List of ndarray data type single letter character abbreviations.

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<section class="installation">

## Installation

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

</section>

<section class="usage">

## Usage

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

#### dtypeChars( \[kind] )

Returns a list of ndarray data type single letter character abbreviations.

```javascript
var out = dtypeChars();
// e.g., returns [ 'r', 'j', 'c', 'z', ... ]
```

When not provided a data type "kind", the function returns an array containing the single letter character abbreviations for all supported ndarray [data types][@stdlib/ndarray/dtypes]. To return the subset of data type single letter character abbreviations belonging to a specified data type kind, provide a `kind` argument.

```javascript
var out = dtypeChars( 'floating_point' );
// returns [...]
```

The function supports the following data type kinds:

-   `floating_point`: floating-point data types.
-   `real_floating_point`: real-valued floating-point data types.
-   `complex_floating_point`: complex-valued floating-point data types.
-   `boolean`: boolean data types.
-   `integer`: integer data types.
-   `signed_integer`: signed integer data types.
-   `unsigned_integer`: unsigned integer data types.
-   `real`: real-valued data types.
-   `numeric`: numeric data types.
-   `typed`: typed data types.
-   `integer_index`: integer index data types.
-   `boolean_index`: boolean index data types.
-   `mask_index`: mask index data types.
-   `typed_index`: typed index data types.
-   `index`: index data types.
-   `all`: all data types.

Additionally, the function supports extending the "kinds" listed above by appending an `_and_generic` suffix to the kind name (e.g., `real_and_generic`).

```javascript
var out = dtypeChars( 'floating_point_and_generic' );
// returns [...]
```

</section>

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<section class="examples">

## Examples

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

```javascript
var contains = require( '@stdlib/array-base-assert-contains' ).factory;
var dtypeChars = require( '@stdlib/ndarray-base-dtype-chars' );

var isdtypeChar = contains( dtypeChars() );

var bool = isdtypeChar( 'd' );
// returns true

bool = isdtypeChar( 'k' );
// returns true

bool = isdtypeChar( 'b' );
// returns true

bool = isdtypeChar( '~' );
// returns false
```

</section>

<!-- /.examples -->

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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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