Define aliases inline.

underscore.js

@@ -59,10 +59,10 @@
   // Collection Functions
   // --------------------
 
-  // The cornerstone, an `each` implementation.
+  // The cornerstone, an `each` implementation, aka `forEach`.
   // Handles objects implementing `forEach`, arrays, and raw objects.
   // Delegates to **ECMAScript 5**'s native `forEach` if available.
-  var each = _.forEach = function(obj, iterator, context) {
+  var each = _.each = _.forEach = function(obj, iterator, context) {
     try {
       if (nativeForEach && obj.forEach === nativeForEach) {
         obj.forEach(iterator, context);
@@ -92,7 +92,7 @@
 
   // **Reduce** builds up a single result from a list of values, aka `inject`,
   // or `foldl`. Delegates to **ECMAScript 5**'s native `reduce` if available.
-  _.reduce = function(obj, iterator, memo, context) {
+  _.reduce = _.foldl = _.inject = function(obj, iterator, memo, context) {
     if (nativeReduce && obj.reduce === nativeReduce) {
       if (context) iterator = _.bind(iterator, context);
       return obj.reduce(iterator, memo);
@@ -105,7 +105,7 @@
 
   // The right-associative version of reduce, also known as `foldr`. Uses
   // Delegates to **ECMAScript 5**'s native reduceRight if available.
-  _.reduceRight = function(obj, iterator, memo, context) {
+  _.reduceRight = _.foldr = function(obj, iterator, memo, context) {
     if (nativeReduceRight && obj.reduceRight === nativeReduceRight) {
       if (context) iterator = _.bind(iterator, context);
       return obj.reduceRight(iterator, memo);
@@ -128,7 +128,8 @@
 
   // Return all the elements that pass a truth test.
   // Delegates to **ECMAScript 5**'s native `filter` if available.
-  _.filter = function(obj, iterator, context) {
+  // Aliased as `select`
+  _.filter = _.select = function(obj, iterator, context) {
     if (nativeFilter && obj.filter === nativeFilter) return obj.filter(iterator, context);
     var results = [];
     each(obj, function(value, index, list) {
@@ -148,7 +149,8 @@
 
   // Determine whether all of the elements match a truth test.
   // Delegates to **ECMAScript 5**'s native `every` if available.
-  _.every = function(obj, iterator, context) {
+  // Aliased as `all`.
+  _.every = _.all = function(obj, iterator, context) {
     iterator = iterator || _.identity;
     if (nativeEvery && obj.every === nativeEvery) return obj.every(iterator, context);
     var result = true;
@@ -160,7 +162,8 @@
 
   // Determine if at least one element in the object matches a truth test.
   // Delegates to **ECMAScript 5**'s native `some` if available.
-  _.some = function(obj, iterator, context) {
+  // Aliased as `any`.
+  _.some = _.any = function(obj, iterator, context) {
     iterator = iterator || _.identity;
     if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
     var result = false;
@@ -260,7 +263,7 @@
   // Get the first element of an array. Passing **n** will return the first N
   // values in the array. Aliased as `head`. The **guard** check allows it to work
   // with `_.map`.
-  _.first = function(array, n, guard) {
+  _.first = _.head = function(array, n, guard) {
     return n && !guard ? slice.call(array, 0, n) : array[0];
   };
 
@@ -268,7 +271,7 @@
   // Especially useful on the arguments object. Passing an **index** will return
   // the rest of the values in the array from that index onward. The **guard**
   // check allows it to work with `_.map`.
-  _.rest = function(array, index, guard) {
+  _.rest = _.tail = function(array, index, guard) {
     return slice.call(array, _.isUndefined(index) || guard ? 1 : index);
   };
 
@@ -307,8 +310,8 @@
   };
 
   // Produce an array that contains every item shared between all the
-  // passed-in arrays.
+  // passed-in arrays. Aliased as `contains`.
-  _.intersect = function(array) {
+  _.intersect = _.contains = function(array) {
     var rest = slice.call(arguments, 1);
     return _.filter(_.uniq(array), function(item) {
       return _.every(rest, function(other) {
@@ -447,7 +450,8 @@
   };
 
   // Return a sorted list of the function names available on the object.
-  _.functions = function(obj) {
+  // Aliased as `methods`
+  _.functions = _.methods = function(obj) {
     return _.filter(_.keys(obj), function(key){ return _.isFunction(obj[key]); }).sort();
   };
 
@@ -648,20 +652,6 @@
     return data ? func(data) : func;
   };
 
-  // Aliases:
-  // --------
-
-  _.each     = _.forEach;
-  _.foldl    = _.inject       = _.reduce;
-  _.foldr    = _.reduceRight;
-  _.select   = _.filter;
-  _.all      = _.every;
-  _.any      = _.some;
-  _.contains = _.include;
-  _.head     = _.first;
-  _.tail     = _.rest;
-  _.methods  = _.functions;
-
   // The OOP Wrapper
   // ---------------