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Xcode: Passing by ref variables - UPDATED!!
Example of how to pass a variable by ref in iOS
Caller:
NSMutableString *byRefVar;
[self FakeFunction:&byRefVar];
Function:
+(void)FakeFunction:(NSMutableString **)byRefVar
{
[*byRefVar setString:@"Fake value"];
}
for a native variable as an int we can write
Caller:
int intValue = 0;
int *byRefIntVar = &intValue;
[self FakeFunctionNative:byRefIntVar];
Function:
+(void)FakeFunctionNative:(int *)byRefIntVar
{
*byRefIntVar = 3;
}
- 08/12/2012
- Fonte: Titano
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