wh1t3cat1k wh1t3cat1k - 4 months ago 7
Objective-C Question

_cmd value inside c functions

Good evening!

What's the value of

_cmd
variable when I access it from C-style function's body?

Is it defined inside selectors (Objective-C) methods only?

Thank you!

P.S.

This question may originate from my non-understanding of what
_cmd
is.
I would greatly appreciate if someone provided me with a good explanation source.

Answer

It's for Objective-C methods only, so you can't access it. The first two parameters passed to all Objective-C methods are self and _cmd, then whatever other arguments the actual method takes. Since neither self nor _cmd are passed to regular C functions, you can't access them.

There's nothing particularly magic about either variable.