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September 4, 2015 23:46
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Function that flattens an array of arbitrarily nested arrays of integers into a flat array of integers. e.g. [[1,2,[3]],4] -> [1,2,3,4].
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| /** | |
| * Flattens the passed in array. | |
| * | |
| * @param {Array} array The array to flatten. | |
| * @param {boolean} isDeep Specify a deep flatten. | |
| * @returns {Array} Returns the new flattened array. | |
| */ | |
| function flatten(array, isDeep) { | |
| var index = -1, | |
| length = array.length, | |
| result = []; | |
| while (++index < length) { | |
| var value = array[index]; | |
| if (Array.isArray(value)) { | |
| // Recursively flatten arrays (susceptible to call stack limits) | |
| result = result.concat(isDeep ? flatten(value, isDeep) : value); | |
| } else { | |
| result.push(value); | |
| } | |
| } | |
| return result; | |
| } |
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