Changeset 12819

Timestamp:

03/02/08 20:21:52 (10 months ago)

Author:

elazutkin

Message:

dojox.lang.functional: adding missing everyRev() and someRev()
to facilitate conditional reversed loop. !strict

Location:

dojox/trunk/lang

Files:

• functional/reversed.js (modified) (1 diff)
• tests/array.js (modified) (2 diffs)

dojox/trunk/lang/functional/reversed.js

@@ -47 +47 @@
                         for(var i = n - 1, j = 0; i >= 0; t[j++] = f.call(o, a[i], i, a), --i);
                         return t;       // Array
+                },
+                everyRev: function(/*Array|String*/ a, /*Function|String|Array*/ f, /*Object?*/ o){
+                        // summary: tests whether all elements in the array pass the test 
+                        //      implemented by the provided function.
+                        if(typeof a == "string"){ a = a.split(""); }
+                        o = o || d.global; f = df.lambda(f);
+                        for(var i = a.length - 1; i >= 0; --i){
+                                if(!f.call(o, a[i], i, a)){
+                                        return false;   // Boolean
+                                }
+                        }
+                        return true;    // Boolean
+                },
+                someRev: function(/*Array|String*/ a, /*Function|String|Array*/ f, /*Object?*/ o){
+                        // summary: tests whether some element in the array passes the test 
+                        //      implemented by the provided function.
+                        if(typeof a == "string"){ a = a.split(""); }
+                        o = o || d.global; f = df.lambda(f);
+                        for(var i = a.length - 1; i >= 0; --i){
+                                if(f.call(o, a[i], i, a)){
+                                        return true;    // Boolean
+                                }
+                        }
+                        return false;   // Boolean
                 }
         });

dojox/trunk/lang/tests/array.js

@@ -56 +56 @@
                         t.assertTrue(df.every(iter, isOdd));
                 },
+                function testEveryRev1(t){ t.assertFalse(df.everyRev([1, 2, 3], isOdd)); },
+                function testEveryRev2(t){ t.assertTrue(df.everyRev([1, 3, 5], isOdd)); },
 
                 function testSome1(t){ t.assertFalse(df.some([2, 4, 6], isOdd)); },
@@ -63 +65 @@
                         t.assertTrue(df.some(iter, isOdd));
                 },
+                function testSomeRev1(t){ t.assertFalse(df.someRev([2, 4, 6], isOdd)); },
+                function testSomeRev2(t){ t.assertTrue(df.someRev([1, 2, 3], isOdd)); },
 
                 function testReduce1(t){ t.assertEqual(df.reduce([4, 2, 1], "x-y"), 1); },