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Re-arrange baseline setup section.

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Put all variable declartions in a row, so they can all be
chained together with commas by compiler.

Move wrapper creation code down in OO section.  Not necissary
for `var wrapper` to be defined when _ constructor is defined.
Preparing way to make OO wrapping optional..
This commit is contained in:
Mike Frawley
2010-02-23 17:34:34 -06:00
parent 59d383c151
commit 1cf73c5474
1 changed files with 17 additions and 17 deletions
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34
underscore.js
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@@ -7,7 +7,6 @@
// http://documentcloud.github.com/underscore
(function() {
// ------------------------- Baseline setup ---------------------------------
// Establish the root object, "window" in the browser, or "global" on the server.
@@ -16,21 +15,9 @@
// Save the previous value of the "_" variable.
var previousUnderscore = root._;
// If Underscore is called as a function, it returns a wrapped object that
// can be used OO-style. This wrapper holds altered versions of all the
// underscore functions. Wrapped objects may be chained.
var wrapper = function(obj) { this._wrapped = obj; };
// Establish the object that gets thrown to break out of a loop iteration.
var breaker = typeof StopIteration !== 'undefined' ? StopIteration : '__break__';
// Create a safe reference to the Underscore object for reference below.
var _ = function(obj) { return new wrapper(obj); };
root._ = _;
// Export the Underscore object for CommonJS.
if (typeof exports !== 'undefined') exports._ = _;
// Save bytes in the minified (but not gzipped) version:
var Array_Prototype = Array.prototype;
@@ -52,12 +39,21 @@
native_some = Array_Prototype.some,
native_indexOf = Array_Prototype.indexOf,
native_lastIndexOf = Array_Prototype.lastIndexOf,
native_isArray = Array['isArray'],
native_isArray = Array['isArray'], // use [] notation since not in closure's externs
native_keys = Object['keys'];
// Create a safe reference to the Underscore object for reference below.
var _ = function(obj) { return new wrapper(obj); };
// Export the Underscore object for CommonJS.
if (typeof exports !== 'undefined') exports._ = _;
// Export underscore to global scope.
root._ = _;
// Current version.
_.VERSION = '0.5.8';
// ------------------------ Collection Functions: ---------------------------
// The cornerstone, an each implementation.
@@ -92,8 +88,7 @@
return results;
};
// Reduce builds up a single result from a list of values. Also known as
// inject, or foldl.
// Reduce builds up a single result from a list of values, aka inject, or foldl.
// Delegates to JavaScript 1.8's native reduce if available.
_.reduce = function(obj, memo, iterator, context) {
if (obj.reduce === native_reduce) return obj.reduce(_.bind(iterator, context), memo);
@@ -645,6 +640,11 @@
// ------------------------ Setup the OOP Wrapper: --------------------------
// If Underscore is called as a function, it returns a wrapped object that
// can be used OO-style. This wrapper holds altered versions of all the
// underscore functions. Wrapped objects may be chained.
var wrapper = function(obj) { this._wrapped = obj; };
// Helper function to continue chaining intermediate results.
var result = function(obj, chain) {
return chain ? _(obj).chain() : obj;