@stdlib/array/base/fancy-slice-assign/README.md

Arrays.

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# sliceAssign

> Assign element values from a broadcasted input array to corresponding elements in an output array.

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## Usage

```javascript
var sliceAssign = require( '@stdlib/array/base/fancy-slice-assign' );
```

#### slice( x, y, s, strict )

Assigns element values from a broadcasted input array to corresponding elements in an output array.

```javascript
var Slice = require( '@stdlib/slice/ctor' );

var x = [ 1, 2, 3, 4 ];
var y = [ 0, 0, 0, 0, 0, 0, 0, 0 ];

var s = new Slice( null, null, -2 );
// returns <Slice>

var out = sliceAssign( x, y, s, false );
// returns [ 0, 4, 0, 3, 0, 2, 0, 1 ]

var bool = ( out === y );
// returns true
```

The function supports the following parameters:

-   **x**: input array.
-   **y**: output array.
-   **s**: [slice][@stdlib/slice/ctor] object specifying the output array slice.
-   **strict**: boolean indicating whether to enforce strict bounds checking.

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## Notes

-   The input array **must** be broadcast compatible with the output array slice (i.e., contain only one element or the same number of elements as in the slice).
-   The input array must have a [data type][@stdlib/array/dtypes] which can be [safely cast][@stdlib/array/safe-casts] to the output array data type. Floating-point data types (both real and complex) are allowed to downcast to a lower precision data type of the [same kind][@stdlib/array/same-kind-casts] (e.g., element values from a `'float64'` input array can be assigned to corresponding elements in a `'float32'` output array).

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## Examples

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

```javascript
var zeroTo = require( '@stdlib/array/zero-to' );
var zeros = require( '@stdlib/array/zeros' );
var Slice = require( '@stdlib/slice/ctor' );
var sliceAssign = require( '@stdlib/array/base/fancy-slice-assign' );

var x = zeroTo( 10, 'generic' );
// returns [ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 ]

var y = zeros( 10, 'generic' );
// returns [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ]

var s = new Slice();
var out = sliceAssign( x, y, s, false );
// returns [ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 ]

x = zeroTo( 5, 'generic' );
// returns [ 0, 1, 2, 3, 4 ]

y = zeros( 10, 'generic' );
s = new Slice( null, null, -2 );
out = sliceAssign( x, y, s, false );
// returns [ 0, 4, 0, 3, 0, 2, 0, 1, 0, 0 ]

x = zeroTo( 5, 'generic' );
// returns [ 0, 1, 2, 3, 4 ]

y = zeros( 10, 'generic' );
s = new Slice( -2, null, -2 );
out = sliceAssign( x, y, s, false );
// returns [ 4, 0, 3, 0, 2, 0, 1, 0, 0, 0 ]

x = zeroTo( 6, 'generic' );
// returns [ 0, 1, 2, 3, 4, 5 ]

y = zeros( 10, 'generic' );
s = new Slice( 2, -2 );
out = sliceAssign( x, y, s, false );
// returns [ 0, 0, 0, 1, 2, 3, 4, 5, 0, 0 ]

x = zeroTo( 3, 'generic' );
// returns [ 0, 1, 2 ]

y = zeros( 10, 'generic' );
s = new Slice( 2, 5 );
out = sliceAssign( x, y, s, false );
// returns [ 0, 0, 0, 1, 2, 0, 0, 0, 0, 0 ]

x = zeroTo( 3, 'generic' );
// returns [ 0, 1, 2 ]

y = zeros( 10, 'generic' );
s = new Slice( 4, 1, -1 );
out = sliceAssign( x, y, s, false );
// returns [ 0, 0, 2, 1, 0, 0, 0, 0, 0, 0 ]

x = zeroTo( 5, 'generic' );
// returns [ 0, 1, 2, 3, 4 ]

y = zeros( 10, 'generic' );
s = new Slice( 5 );
out = sliceAssign( x, y, s, false );
// returns [ 0, 1, 2, 3, 4, 0, 0, 0, 0, 0 ]

x = zeroTo( 5, 'generic' );
// returns [ 0, 1, 2, 3, 4 ]

y = zeros( 10, 'generic' );
s = new Slice( 5, null );
out = sliceAssign( x, y, s, false );
// returns [ 0, 0, 0, 0, 0, 0, 1, 2, 3, 4 ]
```

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[@stdlib/slice/ctor]: https://www.npmjs.com/package/@stdlib/slice-ctor

[@stdlib/array/dtypes]: https://github.com/stdlib-js/array/tree/main/dtypes

[@stdlib/array/safe-casts]: https://github.com/stdlib-js/array/tree/main/safe-casts

[@stdlib/array/same-kind-casts]: https://github.com/stdlib-js/array/tree/main/same-kind-casts

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