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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 contains = require( '@stdlib/array/base/assert/contains' ).factory;
var full = require( '@stdlib/array/full' );
var join = require( '@stdlib/array/base/join' );
var dtypes = require( '@stdlib/array/dtypes' );
var defaults = require( '@stdlib/array/defaults' );
var format = require( '@stdlib/string/format' );
// VARIABLES //
var DTYPES = dtypes( 'boolean_and_generic' );
var isValidDType = contains( DTYPES );
var DEFAULT_DTYPE = defaults.get( 'dtypes.boolean' );
// MAIN //
/**
* Creates an array filled with true values and having a specified length.
*
* @param {NonNegativeInteger} length - array length
* @param {string} [dtype="bool"] - data type
* @throws {TypeError} first argument must be a nonnegative integer
* @throws {TypeError} second argument must be a supported data type
* @returns {(BooleanArray|Array)} array or typed array
*
* @example
* var arr = trues( 2 );
* // returns <BooleanArray>[ true, true ]
*
* @example
* var arr = trues( 2, 'generic' );
* // returns [ true, true ]
*/
function trues( length ) {
var dtype;
if ( arguments.length > 1 ) {
dtype = arguments[ 1 ];
if ( !isValidDType( dtype ) ) {
throw new TypeError( format( 'invalid argument. Second argument must be one of the following: "%s". Value: `%s`.', join( DTYPES, '", "' ), dtype ) );
}
} else {
dtype = DEFAULT_DTYPE;
}
return full( length, true, dtype );
}
// EXPORTS //
module.exports = trues;
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