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authormensonge <mensonge@b3834d28-1941-0410-a4f8-b48e95affb8f>2008-11-13 09:49:11 +0000
committermensonge <mensonge@b3834d28-1941-0410-a4f8-b48e95affb8f>2008-11-13 09:49:11 +0000
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tree95b67c356e93163467db2451f2b8cce84ed5d582 /includes/js/dojox/lang/functional/reversed.js
parenta62b9742ee5e28bcec6872d88f50f25b820914f6 (diff)
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New feature: basic Ajax suggestion for tags and implementation of Dojo toolkit
git-svn-id: https://semanticscuttle.svn.sourceforge.net/svnroot/semanticscuttle/trunk@151 b3834d28-1941-0410-a4f8-b48e95affb8f
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+if(!dojo._hasResource["dojox.lang.functional.reversed"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
+dojo._hasResource["dojox.lang.functional.reversed"] = true;
+dojo.provide("dojox.lang.functional.reversed");
+
+dojo.require("dojox.lang.functional.lambda");
+
+// This module adds high-level functions and related constructs:
+// - reversed versions of array-processing functions similar to standard JS functions
+
+// Notes:
+// - this module provides reversed versions of standard array-processing functions:
+// forEachRev, mapRev, filterRev
+
+// Defined methods:
+// - take any valid lambda argument as the functional argument
+// - operate on dense arrays
+// - take a string as the array argument
+
+(function(){
+ var d = dojo, df = dojox.lang.functional;
+
+ d.mixin(df, {
+ // JS 1.6 standard array functions, which can take a lambda as a parameter.
+ // Consider using dojo._base.array functions, if you don't need the lambda support.
+ filterRev: function(/*Array|String*/ a, /*Function|String|Array*/ f, /*Object?*/ o){
+ // summary: creates a new array with all elements that pass the test
+ // implemented by the provided function.
+ if(typeof a == "string"){ a = a.split(""); }
+ o = o || d.global; f = df.lambda(f);
+ var t = [], v;
+ for(var i = a.length - 1; i >= 0; --i){
+ v = a[i];
+ if(f.call(o, v, i, a)){ t.push(v); }
+ }
+ return t; // Array
+ },
+ forEachRev: function(/*Array|String*/ a, /*Function|String|Array*/ f, /*Object?*/ o){
+ // summary: executes a provided function once per array element.
+ if(typeof a == "string"){ a = a.split(""); }
+ o = o || d.global; f = df.lambda(f);
+ for(var i = a.length - 1; i >= 0; f.call(o, a[i], i, a), --i);
+ },
+ mapRev: function(/*Array|String*/ a, /*Function|String|Array*/ f, /*Object?*/ o){
+ // summary: creates a new array with the results of calling
+ // a provided function on every element in this array.
+ if(typeof a == "string"){ a = a.split(""); }
+ o = o || d.global; f = df.lambda(f);
+ var n = a.length, t = new Array(n);
+ 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
+ }
+ });
+})();
+
+}