Return a specified flag for a provided ndarray.
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> Return a specified flag for a provided [ndarray][@stdlib/ndarray/ctor].
``bash`
npm install @stdlib/ndarray-flag
`javascript`
var flag = require( '@stdlib/ndarray-flag' );
#### flag( x, name )
Returns a specified flag for a provided [ndarray][@stdlib/ndarray/ctor].
`javascript
var zeros = require( '@stdlib/ndarray-zeros' );
var x = zeros( [ 3, 2, 3 ] );
// returns
var o = flag( x, 'READONLY' );
// returns
`
- This function is intended as a slight performance optimization over [@stdlib/ndarray-flags][@stdlib/ndarray/flags] when only a single flag is needed. For retrieving multiple flags, use [@stdlib/ndarray/flags][@stdlib/ndarray/flags] directly.
`javascript
var zeros = require( '@stdlib/ndarray-zeros' );
var slice = require( '@stdlib/ndarray-slice' );
var E = require( '@stdlib/slice-multi' );
var S = require( '@stdlib/slice-ctor' );
var flag = require( '@stdlib/ndarray-flag' );
// Create an array:
var x = zeros( [ 10, 10, 10, 10 ] );
// returns
// Define some slices:
var slices = [
// :,:,:,:
E( null, null, null, null ),
// 5:10,4,2:4,::-1
E( S( 5, 10 ), 4, S( 2, 4 ), S( null, null, -1 ) ),
// :,:,2,:
E( null, null, 2, null ),
// 1,2,3,:
E( 1, 2, 3, null ),
// 1,3,::2,4::2
E( 1, 3, S( null, null, 2 ), S( 4, null, 2 ) )
];
// Check whether each slice is row-major contiguous...
var s;
var i;
for ( i = 0; i < slices.length; i++ ) {
s = slice( x, slices[ i ] );
console.log( '%s', flag( s, 'ROW_MAJOR_CONTIGUOUS' ) );
}
`
*
- [@stdlib/ndarray-array][@stdlib/ndarray/array]: multidimensional arrays.
- [@stdlib/ndarray-ctor][@stdlib/ndarray/ctor]: multidimensional array constructor.
- [@stdlib/ndarray-flags][@stdlib/ndarray/flags]: return the flags of a provided ndarray.
*
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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---
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[deno-url]: https://github.com/stdlib-js/ndarray-flag/tree/deno
[deno-readme]: https://github.com/stdlib-js/ndarray-flag/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/ndarray-flag/tree/umd
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