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                Map 是一個鍵值對組成的容器。一個 Map 也通常被稱為一個關聯數組、字典或者符號表。下面的代碼是要給簡短的使用Map的示例: ~~~ class Main { static public function main() { // Maps are initialized like arrays, but // use the map literal syntax with the // ’=>’ operator. Maps can have their // key value types defined explicity var map1:Map<Int, String> = [1 => "one", 2=>"two"]; // Or they can infer their key value types var map2 = [ "one"=>1, "two"=>2, "three"=>3 ]; $type(map2); // Map<String, Int> // Keys must be unique // Error: Duplicate Key //var map3 = [1=>"dog", 1=>"cat"]; // Maps values can be accessed using array // accessors "[]" var map4 = ["M"=>"Monday", "T"=>"Tuesday"]; trace(map4["M"]); //Monday // Maps iterate over their values by // default var valueSum; for (value in map4) { trace(value); // Monday \n Tuesday } // Can iterate over keys by using the // keys() method for (key in map4.keys()) { trace(key); // M \n T } // Like arrays, a new Map can be made using // comprehension var map5 = [ for (key in map4.keys()) key => "FRIDAY!!" ]; // {M => FRIDAY!!, T => FRIDAY!!} trace(map5); } } ~~~ 在后臺,Map 是一個抽象類型。在編譯時,它被轉換為集中特定類型之一,取決于鍵的類型: * String : `haxe.ds.StringMap` * Int : `haxe.ds.IntMap` * EnumValue : `haxe.ds.EnumValueMap` * {} : `haxe.ds.ObjectMap` Map類型在運行時不存在,被上面的對象之一取代。Map使用它的鍵類型定義數組訪問(第2.8.3節)。 查看Map API 詳細了解它的方法。
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