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                ## ds_map_size——映射表長度 *返回映射表中鍵值對的數量* #### **語法:** ```javascript ds_map_size(id); ``` 參數 | 描述 |---|---| id | 需要處理的映射表的索引ID #### **返回:** Real #### **描述:** 使用這個方法可以查詢指定的映射表中一共包含多少個鍵值對 #### **示例:** ```javascript if ds_map_size(inventory) > 49 { full = true; } ``` 以上代碼首先獲取了"inventory"中的鍵值對數量,然后將這個數量與49進行比較,如果大于49,則將變量"full"設為true。
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