To answer your second question consider BOOL b = (BOOL)someObj; if someObj happens to equal something like 0x12345600 the value of b will be NO because casting from a pointer to a char will return the least significant byte.
For your first question I don't know exactly but it doesn't look safe; I think it works if the sizeof a pointer happens to equal the sizeof an int but I've never done this so I wouldn't know for sure. On Mon, 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? > > 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? > > -Carl > > > _______________________________________________ > > 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/conceptuallyflawed%40gmail.com > > This email sent to conceptuallyfla...@gmail.com _______________________________________________ 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
