> On Apr 18, 2016, at 6:56 PM, Carl Hoefs <newsli...@autonomy.caltech.edu> > wrote: > > Suppose I have an object with a declared method signature: > -(void)myMethod:(BOOL)a_bool; > > Q1: If I invoke it like this: > [self performSelector:@selector(myMethod:) withObject:nil]; // nil obj > Will argument a_bool end up with a 0 value assigned to it?
Don't do that. The behavior is undefined. It probably happens to work on all current architectures. > Q2: But if I invoke it like this: > [self performSelector:@selector(myMethod:) withObject:someObj]; // valid obj > Will argument a_bool end up with a 1 value assigned to it? Don't do that. The behavior is undefined. It will certainly fail on some current architectures at least some of the time. You should not use -performSelector:withObject: to call methods that use non-object parameters. -- Greg Parker gpar...@apple.com Runtime Wrangler _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
