is_ptr


Description

This function returns whether a given variable is a pointer or not. In some cases you want to check and see what data type a variable holds in GameMaker Studio 2 and that's when you would use this function. It returns true or false depending on whether the value is a pointer or not. For further information on data types see here.


Syntax:

is_ptr(n);


Arguments:

Argument Description
n The argument to check.


Returns:

Boolean


Example:

if !is_ptr(val)
   {
   show_debug_message("Not a valid texture!");
   }

The above code checks the variable "val" to see if it contains a pointer and if it is not then it shows a message in the debug console.