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Struts example source code file (array.js)

This example Struts source code file (array.js) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Struts tags/keywords

array, array, boolean, boolean

The Struts array.js source code

/*
	Copyright (c) 2004-2006, The Dojo Foundation
	All Rights Reserved.

	Licensed under the Academic Free License version 2.1 or above OR the
	modified BSD license. For more information on Dojo licensing, see:

		http://dojotoolkit.org/community/licensing.shtml
*/



dojo.provide("dojo.lang.array");
dojo.require("dojo.lang.common");
dojo.lang.mixin(dojo.lang, {has:function (obj, name) {
	try {
		return typeof obj[name] != "undefined";
	}
	catch (e) {
		return false;
	}
}, isEmpty:function (obj) {
	if (dojo.lang.isObject(obj)) {
		var tmp = {};
		var count = 0;
		for (var x in obj) {
			if (obj[x] && (!tmp[x])) {
				count++;
				break;
			}
		}
		return count == 0;
	} else {
		if (dojo.lang.isArrayLike(obj) || dojo.lang.isString(obj)) {
			return obj.length == 0;
		}
	}
}, map:function (arr, obj, unary_func) {
	var isString = dojo.lang.isString(arr);
	if (isString) {
		arr = arr.split("");
	}
	if (dojo.lang.isFunction(obj) && (!unary_func)) {
		unary_func = obj;
		obj = dj_global;
	} else {
		if (dojo.lang.isFunction(obj) && unary_func) {
			var tmpObj = obj;
			obj = unary_func;
			unary_func = tmpObj;
		}
	}
	if (Array.map) {
		var outArr = Array.map(arr, unary_func, obj);
	} else {
		var outArr = [];
		for (var i = 0; i < arr.length; ++i) {
			outArr.push(unary_func.call(obj, arr[i]));
		}
	}
	if (isString) {
		return outArr.join("");
	} else {
		return outArr;
	}
}, reduce:function (arr, initialValue, obj, binary_func) {
	var reducedValue = initialValue;
	if (arguments.length == 2) {
		binary_func = initialValue;
		reducedValue = arr[0];
		arr = arr.slice(1);
	} else {
		if (arguments.length == 3) {
			if (dojo.lang.isFunction(obj)) {
				binary_func = obj;
				obj = null;
			}
		} else {
			if (dojo.lang.isFunction(obj)) {
				var tmp = binary_func;
				binary_func = obj;
				obj = tmp;
			}
		}
	}
	var ob = obj || dj_global;
	dojo.lang.map(arr, function (val) {
		reducedValue = binary_func.call(ob, reducedValue, val);
	});
	return reducedValue;
}, forEach:function (anArray, callback, thisObject) {
	if (dojo.lang.isString(anArray)) {
		anArray = anArray.split("");
	}
	if (Array.forEach) {
		Array.forEach(anArray, callback, thisObject);
	} else {
		if (!thisObject) {
			thisObject = dj_global;
		}
		for (var i = 0, l = anArray.length; i < l; i++) {
			callback.call(thisObject, anArray[i], i, anArray);
		}
	}
}, _everyOrSome:function (every, arr, callback, thisObject) {
	if (dojo.lang.isString(arr)) {
		arr = arr.split("");
	}
	if (Array.every) {
		return Array[every ? "every" : "some"](arr, callback, thisObject);
	} else {
		if (!thisObject) {
			thisObject = dj_global;
		}
		for (var i = 0, l = arr.length; i < l; i++) {
			var result = callback.call(thisObject, arr[i], i, arr);
			if (every && !result) {
				return false;
			} else {
				if ((!every) && (result)) {
					return true;
				}
			}
		}
		return Boolean(every);
	}
}, every:function (arr, callback, thisObject) {
	return this._everyOrSome(true, arr, callback, thisObject);
}, some:function (arr, callback, thisObject) {
	return this._everyOrSome(false, arr, callback, thisObject);
}, filter:function (arr, callback, thisObject) {
	var isString = dojo.lang.isString(arr);
	if (isString) {
		arr = arr.split("");
	}
	var outArr;
	if (Array.filter) {
		outArr = Array.filter(arr, callback, thisObject);
	} else {
		if (!thisObject) {
			if (arguments.length >= 3) {
				dojo.raise("thisObject doesn't exist!");
			}
			thisObject = dj_global;
		}
		outArr = [];
		for (var i = 0; i < arr.length; i++) {
			if (callback.call(thisObject, arr[i], i, arr)) {
				outArr.push(arr[i]);
			}
		}
	}
	if (isString) {
		return outArr.join("");
	} else {
		return outArr;
	}
}, unnest:function () {
	var out = [];
	for (var i = 0; i < arguments.length; i++) {
		if (dojo.lang.isArrayLike(arguments[i])) {
			var add = dojo.lang.unnest.apply(this, arguments[i]);
			out = out.concat(add);
		} else {
			out.push(arguments[i]);
		}
	}
	return out;
}, toArray:function (arrayLike, startOffset) {
	var array = [];
	for (var i = startOffset || 0; i < arrayLike.length; i++) {
		array.push(arrayLike[i]);
	}
	return array;
}});

Other Struts examples (source code examples)

Here is a short list of links related to this Struts array.js source code file:

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