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Optimize _.every, _.find, and _.some.

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Former-commit-id: 37ace9b92bb2b9875093b73e460f01df9d9c211a
This commit is contained in:
John-David Dalton
2012-11-08 01:05:34 -08:00
parent ed48603ab5
commit a1545c60d6
4 changed files with 87 additions and 58 deletions
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43
lodash.js
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@@ -1907,9 +1907,21 @@
function every(collection, callback, thisArg) {
var result = true;
callback = createCallback(callback, thisArg);
forEach(collection, function(value, index, collection) {
return (result = !!callback(value, index, collection));
});
if (isArray(collection)) {
var index = -1,
length = collection.length;
while (++index < length) {
if (!(result = !!callback(collection[index], index, collection))) {
break;
}
}
} else {
forEach(collection, function(value, index, collection) {
return (result = !!callback(value, index, collection));
});
}
return result;
}
@@ -1965,8 +1977,11 @@
function find(collection, callback, thisArg) {
var result;
callback = createCallback(callback, thisArg);
some(collection, function(value, index, collection) {
return callback(value, index, collection) && (result = value, true);
forEach(collection, function(value, index, collection) {
if (callback(value, index, collection)) {
result = value;
return false;
}
});
return result;
}
@@ -2397,9 +2412,21 @@
function some(collection, callback, thisArg) {
var result;
callback = createCallback(callback, thisArg);
forEach(collection, function(value, index, collection) {
return !(result = callback(value, index, collection));
});
if (isArray(collection)) {
var index = -1,
length = collection.length;
while (++index < length) {
if (result = callback(collection[index], index, collection)) {
break;
}
}
} else {
forEach(collection, function(value, index, collection) {
return !(result = callback(value, index, collection));
});
}
return !!result;
}