描述

With this function you can find how many key/values pairs the (previously created) ds_map contains.

语法：

ds_map_size(id);

返回：

Real（实数）

例如：

if ds_map_size(inventory) > 49
   {
   full = true;
   }

The above code will check the size of the ds_map (ie: number of key/value pairs) and if it is greater than 49 it sets the variable "full" to true.