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* @license Apache-2.0
*
* Copyright (c) 2026 The Stdlib Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
'use strict';
// MODULES //
var concat = require( '@stdlib/ndarray/concat' ).assign;
// MAIN //
/**
* Concatenates a list of ndarrays along the second-to-last dimension and assigns results to a provided output ndarray.
*
* ## Notes
*
* - Input ndarrays must have more than one dimension.
*
* @param {ArrayLikeObject<ndarrayLike>} arrays - array-like object containing input ndarrays
* @param {ndarrayLike} out - output ndarray
* @throws {TypeError} first argument must be an array-like object containing one or more ndarrays
* @throws {TypeError} second argument must be an ndarray-like object
* @throws {TypeError} second argument must have a valid shape
* @throws {RangeError} must provide ndarrays having two or more dimensions
* @throws {Error} must provide ndarrays which are broadcast-compatible with one another
* @throws {Error} must provide ndarrays which can be safely cast to a common data type
* @throws {Error} input ndarrays must be safely castable to the output ndarray data type
* @returns {ndarrayLike} output ndarray
*
* @example
* var array = require( '@stdlib/ndarray/array' );
* var zeros = require( '@stdlib/ndarray/zeros' );
*
* var x = array( [ [ 1.0, 2.0 ], [ 3.0, 4.0 ] ] );
* // returns <ndarray>[ [ 1.0, 2.0 ], [ 3.0, 4.0 ] ]
*
* var y = array( [ [ 5.0, 6.0 ], [ 7.0, 8.0 ], [ 9.0, 10.0 ] ] );
* // returns <ndarray>[ [ 5.0, 6.0 ], [ 7.0, 8.0 ], [ 9.0, 10.0 ] ]
*
* var z = zeros( [ 5, 2 ] );
* // returns <ndarray>[ [ 0.0, 0.0 ], [ 0.0, 0.0 ], [ 0.0, 0.0 ], [ 0.0, 0.0 ], [ 0.0, 0.0 ] ]
*
* var out = assign( [ x, y ], z );
* // returns <ndarray>[ [ 1.0, 2.0 ], [ 3.0, 4.0 ], [ 5.0, 6.0 ], [ 7.0, 8.0 ], [ 9.0, 10.0 ] ]
*
* var bool = ( out === z );
* // returns true
*/
function assign( arrays, out ) {
concat( arrays, out, {
'dim': -2
});
return out;
}
// EXPORTS //
module.exports = assign;
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