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52 lines
1.3 KiB
JavaScript
52 lines
1.3 KiB
JavaScript
var baseTimes = require('./_baseTimes'),
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castFunction = require('./_castFunction'),
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toInteger = require('./toInteger');
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/** Used as references for various `Number` constants. */
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var MAX_SAFE_INTEGER = 9007199254740991;
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/** Used as references for the maximum length and index of an array. */
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var MAX_ARRAY_LENGTH = 4294967295;
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/* Built-in method references for those with the same name as other `lodash` methods. */
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var nativeMin = Math.min;
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/**
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* Invokes the iteratee `n` times, returning an array of the results of
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* each invocation. The iteratee is invoked with one argument; (index).
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*
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* @static
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* @since 0.1.0
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* @memberOf _
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* @category Util
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* @param {number} n The number of times to invoke `iteratee`.
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* @param {Function} [iteratee=_.identity] The function invoked per iteration.
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* @returns {Array} Returns the array of results.
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* @example
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*
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* _.times(3, String);
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* // => ['0', '1', '2']
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*
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* _.times(4, _.constant(0));
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* // => [0, 0, 0, 0]
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*/
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function times(n, iteratee) {
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n = toInteger(n);
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if (n < 1 || n > MAX_SAFE_INTEGER) {
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return [];
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}
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var index = MAX_ARRAY_LENGTH,
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length = nativeMin(n, MAX_ARRAY_LENGTH);
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iteratee = castFunction(iteratee);
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n -= MAX_ARRAY_LENGTH;
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var result = baseTimes(length, iteratee);
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while (++index < n) {
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iteratee(index);
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}
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return result;
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}
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module.exports = times;
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