if(!dojo._hasResource["dojox.lang.functional.array"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code. dojo._hasResource["dojox.lang.functional.array"] = true; dojo.provide("dojox.lang.functional.array"); dojo.require("dojox.lang.functional.lambda"); // This module adds high-level functions and related constructs: // - array-processing functions similar to standard JS functions // Notes: // - this module provides JS standard methods similar to high-level functions in dojo/_base/array.js: // forEach, map, filter, every, some // Defined methods: // - take any valid lambda argument as the functional argument // - operate on dense arrays // - take a string as the array argument // - take an iterator objects 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. filter: function(/*Array|String|Object*/ 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; if(d.isArray(a)){ for(var i = 0, n = a.length; i < n; ++i){ v = a[i]; if(f.call(o, v, i, a)){ t.push(v); } } }else{ for(var i = 0; a.hasNext();){ v = a.next(); if(f.call(o, v, i++)){ t.push(v); } } } return t; // Array }, forEach: function(/*Array|String|Object*/ 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); if(d.isArray(a)){ for(var i = 0, n = a.length; i < n; f.call(o, a[i], i, a), ++i); }else{ for(var i = 0; a.hasNext(); f.call(o, a.next(), i++)); } }, map: function(/*Array|String|Object*/ 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 t, n; if(d.isArray(a)){ t = new Array(n = a.length); for(var i = 0; i < n; t[i] = f.call(o, a[i], i, a), ++i); }else{ t = []; for(var i = 0; a.hasNext(); t.push(f.call(o, a.next(), i++))); } return t; // Array }, every: function(/*Array|String|Object*/ 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); if(d.isArray(a)){ for(var i = 0, n = a.length; i < n; ++i){ if(!f.call(o, a[i], i, a)){ return false; // Boolean } } }else{ for(var i = 0; a.hasNext();){ if(!f.call(o, a.next(), i++)){ return false; // Boolean } } } return true; // Boolean }, some: function(/*Array|String|Object*/ 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); if(d.isArray(a)){ for(var i = 0, n = a.length; i < n; ++i){ if(f.call(o, a[i], i, a)){ return true; // Boolean } } }else{ for(var i = 0; a.hasNext();){ if(f.call(o, a.next(), i++)){ return true; // Boolean } } } return false; // Boolean } }); })(); }