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var bindCallback = require('../internal/bindCallback');
/* Native method references for those with the same name as other `lodash` methods. */
var nativeFloor = Math.floor,
nativeIsFinite = global.isFinite,
nativeMin = Math.min;
/** Used as references for the maximum length and index of an array. */
var MAX_ARRAY_LENGTH = 4294967295;
/**
* Invokes the iteratee function `n` times, returning an array of the results
* of each invocation. The `iteratee` is bound to `thisArg` and invoked with
* one argument; (index).
*
* @static
* @memberOf _
* @category Utility
* @param {number} n The number of times to invoke `iteratee`.
* @param {Function} [iteratee=_.identity] The function invoked per iteration.
* @param {*} [thisArg] The `this` binding of `iteratee`.
* @returns {Array} Returns the array of results.
* @example
*
* var diceRolls = _.times(3, _.partial(_.random, 1, 6, false));
* // => [3, 6, 4]
*
* _.times(3, function(n) {
* mage.castSpell(n);
* });
* // => invokes `mage.castSpell(n)` three times with `n` of `0`, `1`, and `2`
*
* _.times(3, function(n) {
* this.cast(n);
* }, mage);
* // => also invokes `mage.castSpell(n)` three times
*/
function times(n, iteratee, thisArg) {
n = nativeFloor(n);
// Exit early to avoid a JSC JIT bug in Safari 8
// where `Array(0)` is treated as `Array(1)`.
if (n < 1 || !nativeIsFinite(n)) {
return [];
}
var index = -1,
result = Array(nativeMin(n, MAX_ARRAY_LENGTH));
iteratee = bindCallback(iteratee, thisArg, 1);
while (++index < n) {
if (index < MAX_ARRAY_LENGTH) {
result[index] = iteratee(index);
} else {
iteratee(index);
}
}
return result;
}
module.exports = times;
Version data entries
153 entries across 80 versions & 8 rubygems