Underscore 0.5.2

index.html

@@ -113,11 +113,11 @@ <h2>Downloads <i style="padding-left: 12px; font-size:12px;">(Right-click, and u
     <p>
       <table>
         <tr>
-          <td><a href="underscore.js">Development Version (0.5.1)</a></td>
+          <td><a href="underscore.js">Development Version (0.5.2)</a></td>
           <td><i>21kb, Uncompressed with Comments</i></td>
         </tr>
         <tr>
-          <td><a href="underscore-min.js">Production Version (0.5.1)</a></td>
+          <td><a href="underscore-min.js">Production Version (0.5.2)</a></td>
           <td><i>3kb, Packed and Gzipped</i></td>
         </tr>
       </table>
@@ -1067,6 +1067,22 @@ <h2>Links &amp; Suggested Reading</h2>
 
       <h2>Change Log</h2>
 
+      <p>
+        <b class="header">0.5.2</b><br />
+        New implementations of <tt>isArray</tt>, <tt>isDate</tt>, <tt>isFunction</tt>, 
+        <tt>isNumber</tt>, <tt>isRegExp</tt>, and <tt>isString</tt>, thanks to 
+        a suggestion from 
+        <a href="http://www.broofa.com/">Robert Kieffer</a>. 
+        Instead of doing <tt>Object#toString</tt>
+        comparisons, they now check for expected properties, which is less safe, 
+        but more than an order of magnitude faster. Most other Underscore 
+        functions saw minor speed improvements as a result. 
+        <a href="http://dolzhenko.org/">Evgeniy Dolzhenko</a>
+        contributed <tt>_.tap</tt>, 
+        <a href="http://ruby-doc.org/core-1.9/classes/Object.html#M000191">similar to Ruby 1.9's</a>, 
+        which is handy for injecting side effects (like logging) into chained calls.
+      </p>
+
       <p>
         <b class="header">0.5.1</b><br />
         Added an <tt>_.isArguments</tt> function. Lots of little safety checks

underscore.js

@@ -8,7 +8,7 @@
 
 (function() {
 
-  /*------------------------- Baseline setup ---------------------------------*/
+  // ------------------------- Baseline setup ---------------------------------
 
   // Establish the root object, "window" in the browser, or "global" on the server.
   var root = this;
@@ -38,9 +38,9 @@
       propertyIsEnumerable  = Object.prototype.propertyIsEnumerable;
 
   // Current version.
-  _.VERSION = '0.5.1';
+  _.VERSION = '0.5.2';
 
-  /*------------------------ Collection Functions: ---------------------------*/
+  // ------------------------ Collection Functions: ---------------------------
 
   // The cornerstone, an each implementation.
   // Handles objects implementing forEach, arrays, and raw objects.
@@ -234,7 +234,7 @@
     return _.toArray(obj).length;
   };
 
-  /*-------------------------- Array Functions: ------------------------------*/
+  // -------------------------- Array Functions: ------------------------------
 
   // 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
@@ -340,7 +340,7 @@
     }
   };
 
-  /* ----------------------- Function Functions: -----------------------------*/
+  // ----------------------- Function Functions: ------------------------------
 
   // Create a function bound to a given object (assigning 'this', and arguments,
   // optionally). Binding with arguments is also known as 'curry'.
@@ -396,7 +396,7 @@
     };
   };
 
-  /* ------------------------- Object Functions: ---------------------------- */
+  // ------------------------- Object Functions: ------------------------------
 
   // Retrieve the names of an object's properties.
   _.keys = function(obj) {
@@ -532,7 +532,7 @@
     return typeof obj == 'undefined';
   };
 
-  /* -------------------------- Utility Functions: -------------------------- */
+  // -------------------------- Utility Functions: ----------------------------
 
   // Run Underscore.js in noConflict mode, returning the '_' variable to its
   // previous owner. Returns a reference to the Underscore object.
@@ -577,7 +577,7 @@
     return data ? fn(data) : fn;
   };
 
-  /*------------------------------- Aliases ----------------------------------*/
+  // ------------------------------- Aliases ----------------------------------
 
   _.forEach  = _.each;
   _.foldl    = _.inject       = _.reduce;
@@ -589,7 +589,7 @@
   _.tail     = _.rest;
   _.methods  = _.functions;
 
-  /*------------------------ Setup the OOP Wrapper: --------------------------*/
+  // ------------------------ Setup the OOP Wrapper: --------------------------
 
   // Helper function to continue chaining intermediate results.
   var result = function(obj, chain) {