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* @license Apache-2.0
*
* Copyright (c) 2018 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 isArrayLikeObject = require( '@stdlib/assert/is-array-like-object' );
var isComplexLike = require( '@stdlib/assert/is-complex-like' );
var format = require( '@stdlib/string/format' );
var real = require( '@stdlib/complex/float64/real' );
var imag = require( '@stdlib/complex/float64/imag' );
// MAIN //
/**
* Returns an array of iterated values.
*
* @private
* @param {Object} it - iterator
* @returns {(Array|TypeError)} array or an error
*/
function fromIterator( it ) {
var out;
var v;
var z;
out = [];
while ( true ) {
v = it.next();
if ( v.done ) {
break;
}
z = v.value;
if ( isArrayLikeObject( z ) && z.length >= 2 ) {
out.push( z[ 0 ], z[ 1 ] );
} else if ( isComplexLike( z ) ) {
out.push( real( z ), imag( z ) );
} else {
return new TypeError( format( 'invalid argument. An iterator must return either a two-element array containing real and imaginary components or a complex number. Value: `%s`.', z ) );
}
}
return out;
}
// EXPORTS //
module.exports = fromIterator;
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