2 Copyright (c) 2008, Adobe Systems Incorporated
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5 Redistribution and use in source and binary forms, with or without
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6 modification, are permitted provided that the following conditions are
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9 * Redistributions of source code must retain the above copyright notice,
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10 this list of conditions and the following disclaimer.
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12 * Redistributions in binary form must reproduce the above copyright
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13 notice, this list of conditions and the following disclaimer in the
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14 documentation and/or other materials provided with the distribution.
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16 * Neither the name of Adobe Systems Incorporated nor the names of its
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17 contributors may be used to endorse or promote products derived from
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18 this software without specific prior written permission.
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20 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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21 IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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22 THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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23 PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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24 CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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25 EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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26 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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27 PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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28 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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29 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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30 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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33 package com.adobe.utils
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37 * Class that contains static utility methods for manipulating and working
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40 * Note that all APIs assume that they are working with well formed arrays.
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41 * i.e. they will only manipulate indexed values.
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43 * @langversion ActionScript 3.0
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44 * @playerversion Flash 9.0
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47 public class ArrayUtil
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51 * Determines whether the specified array contains the specified value.
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53 * @param arr The array that will be checked for the specified value.
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55 * @param value The object which will be searched for within the array
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57 * @return True if the array contains the value, False if it does not.
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59 * @langversion ActionScript 3.0
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60 * @playerversion Flash 9.0
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63 public static function arrayContainsValue(arr:Array, value:Object):Boolean
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65 return (arr.indexOf(value) != -1);
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69 * Remove all instances of the specified value from the array,
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71 * @param arr The array from which the value will be removed
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73 * @param value The object that will be removed from the array.
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75 * @langversion ActionScript 3.0
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76 * @playerversion Flash 9.0
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79 public static function removeValueFromArray(arr:Array, value:Object):void
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81 var len:uint = arr.length;
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83 for(var i:Number = len; i > -1; i--)
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85 if(arr[i] === value)
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93 * Create a new array that only contains unique instances of objects
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94 * in the specified array.
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96 * Basically, this can be used to remove duplication object instances
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99 * @param arr The array which contains the values that will be used to
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100 * create the new array that contains no duplicate values.
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102 * @return A new array which only contains unique items from the specified
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105 * @langversion ActionScript 3.0
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106 * @playerversion Flash 9.0
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109 public static function createUniqueCopy(a:Array):Array
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111 var newArray:Array = new Array();
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113 var len:Number = a.length;
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116 for (var i:uint = 0; i < len; ++i)
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120 if(ArrayUtil.arrayContainsValue(newArray, item))
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125 newArray.push(item);
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132 * Creates a copy of the specified array.
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134 * Note that the array returned is a new array but the items within the
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135 * array are not copies of the items in the original array (but rather
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136 * references to the same items)
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138 * @param arr The array that will be copies
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140 * @return A new array which contains the same items as the array passed
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143 * @langversion ActionScript 3.0
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144 * @playerversion Flash 9.0
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147 public static function copyArray(arr:Array):Array
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149 return arr.slice();
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153 * Compares two arrays and returns a boolean indicating whether the arrays
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154 * contain the same values at the same indexes.
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156 * @param arr1 The first array that will be compared to the second.
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158 * @param arr2 The second array that will be compared to the first.
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160 * @return True if the arrays contains the same values at the same indexes.
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161 False if they do not.
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163 * @langversion ActionScript 3.0
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164 * @playerversion Flash 9.0
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167 public static function arraysAreEqual(arr1:Array, arr2:Array):Boolean
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169 if(arr1.length != arr2.length)
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174 var len:Number = arr1.length;
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176 for(var i:Number = 0; i < len; i++)
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178 if(arr1[i] !== arr2[i])
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