If I try to unwrap an optional that is is null with --release=fast, my program doesn't crash. So what happens in my code with this happens? Is this just UB?
#Unwrapping Optional with --release=fast
vast mesa
gentle venture
It is UB, or the term zig prefers is Illegal behaviour. zig attempts to define it better and distinguishes between checked an uncheccked IB.
.? is you saying 'this shouldnt be null at this point'. If it can be null then you should instead be using if or orelse.
tribal seal
another way to think about it is,
.? is semantically identical to orelse unreachable
if its null, you reach an unreachable