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lodash: Cleanup flatten avoiding the use of an extraneous empty array. [jddalton]

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Former-commit-id: 6a1eebceb77dd59d34659a295c4a7a2dce92e8a9
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John-David Dalton
2012-04-30 22:51:14 -04:00
parent 2847b1f08e
commit e871ffeff0
1 changed files with 7 additions and 5 deletions
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12
lodash.js
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@@ -988,17 +988,19 @@
*/ */
function flatten(array, shallow) { function flatten(array, shallow) {
if (shallow) { if (shallow) {
return concat.apply([], array); return concat.apply(ArrayProto, array);
} }
var index = -1, var value,
index = -1,
length = array.length, length = array.length,
result = []; result = [];
while (++index < length) { while (++index < length) {
if (isArray(array[index])) { value = array[index];
push.apply(result, flatten(array[index])); if (isArray(value)) {
push.apply(result, flatten(value));
} else { } else {
result.push(array[index]); result.push(value);
} }
} }
return result; return result;