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cache wrapper methods

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This commit is contained in:
Noah Sloan
2009-12-08 14:21:05 -06:00
parent 8c7fcb7781
commit 38cae13d69
1 changed files with 8 additions and 4 deletions
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12
underscore.js
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@@ -555,24 +555,28 @@
// Add all of the Underscore functions to the wrapper object. // Add all of the Underscore functions to the wrapper object.
_.each(_.functions(_), function(name) { _.each(_.functions(_), function(name) {
var unshift = Array.prototype.unshift,
method = _[name];
wrapper.prototype[name] = function() { wrapper.prototype[name] = function() {
Array.prototype.unshift.call(arguments, this._wrapped); unshift.call(arguments, this._wrapped);
return result(_[name].apply(_, arguments), this._chain); return result(method.apply(_, arguments), this._chain);
}; };
}); });
// Add all mutator Array functions to the wrapper. // Add all mutator Array functions to the wrapper.
_.each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) { _.each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
var method = Array.prototype[name];
wrapper.prototype[name] = function() { wrapper.prototype[name] = function() {
Array.prototype[name].apply(this._wrapped, arguments); method.apply(this._wrapped, arguments);
return result(this._wrapped, this._chain); return result(this._wrapped, this._chain);
}; };
}); });
// Add all accessor Array functions to the wrapper. // Add all accessor Array functions to the wrapper.
_.each(['concat', 'join', 'slice'], function(name) { _.each(['concat', 'join', 'slice'], function(name) {
var method = Array.prototype[name];
wrapper.prototype[name] = function() { wrapper.prototype[name] = function() {
return result(Array.prototype[name].apply(this._wrapped, arguments), this._chain); return result(method.apply(this._wrapped, arguments), this._chain);
}; };
}); });