Differences

This shows you the differences between two versions of the page.

--- new:multiple_return_values [2018/02/19 12:54] – korshun
+++ new:multiple_return_values [2019/04/19 21:18] (current) – removed korshun
@@ Line 1: / Line 1: @@
-====== Multiple return values ======
-ACSUtils uses a simple convention for functions returning multiple values, like ''RotateVector'':
-There are global variables r1 through r8. The functions write their return values to them.
-    RotateVector(x, y, angle); // Call the function
-    int newX = r1; // Get the first returned value
-    int newY = r2; // And the second one
-<note warning>
-You should retrieve the return values **as soon as possible**, or else they may get overwritten by other functions that return multiple values.
-Don't do this:
-<code>
-SomeFunctionWithMultipleReturns(...);
-SomeOtherFunction(r1);
-int b = r2;
-</code>
-Because ''SomeOtherFunction'' may call functions that **overwrite r2**! Instead, strictly follow this style:
-<code>
-SomeFunctionWithMultipleReturns(...);
-int a = r1;
-int b = r2;
-SomeOtherFunction(a);
-</code>
-</note>

ACSUtils Wiki