Hi, I am new to Objective-C and GNUstep so my question might be a little basic but please help me out since I am stuck.
We are trying to create an instance of a NSInvocationOperation and put it in the NSOperationQueue as given below
NSInvocationOperation* putOp = [[[NSInvocationOperation alloc] initWithTarget:self selector:@selector(put)
object:[NSNumber numberWithInt:5]] autorelease];
But on compilation, I get the below error :
source/Test.m:5: error: 'NSInvocationOperation' undeclared (first use in this function)
What am I missing here?
View this message in context: NSInvocationOperation error
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