You have clearly never programmed for the iPhone or iPad before. nil is an object. null is a delimiter, usually used in null terminated strings or the value of a parameter.
Don't waste my time. On 1/13/2017 at 2:31 PM, Eric Wing <ewmail...@gmail.com> wrote: >On 1/12/17, Andrew Robinson <arobinso...@cox.net> wrote: >>>I think your understanding of NULL and nil is completely wrong here >>>and you are creating a straw-man. As I already explained, both are >>>defined as 0. There is no difference to the computer. >> >> You are wrong here, and I think that says all I need to say about the rest >> of >> your "argument". Nil is defined as an object, and null as a zero. Read all >> about it here: >> http://www.codingexplorer.com/swift-optionals-declaration-unwrapping-and-binding/ >> >> You don't unwrap or bind strings, you unwrap or bind objects. A nil object >> represents an object which has not been instantiated. It is not zero and >> never >> has been. >> >> Best Regards, >> >> Andrew >> > >You are lost in the abstraction layer and are missing what’s actually >going on at the machine level. > >Let me spell it out for you: >- Cocoa/CocoaTouch is implemented in Objective-C. >- I’m implementing the IUP backend in Objective-C. >- Objective-C is a pure superset of C. > > >In objc.h: nil is defined as: ># define nil __DARWIN_NULL > > >In C, NULL is generally provided by stddef.h, which goes into platform >headers. This will lead you to sys/_types/_null.h >#define NULL __DARWIN_NULL > >See? Both nil and NULL are the same. > > >In sys/_types/_types.h, you’ll find the definition for _DARWIN_NULL >#define __DARWIN_NULL 0 > >See? The value is 0. > > >Thanks, >Eric > >------------------------------------------------------------------------------ >Developer Access Program for Intel Xeon Phi Processors >Access to Intel Xeon Phi processor-based developer platforms. >With one year of Intel Parallel Studio XE. >Training and support from Colfax. >Order your platform today. http://sdm.link/xeonphi >_______________________________________________ >Iup-users mailing list >Iup-users@lists.sourceforge.net >https://lists.sourceforge.net/lists/listinfo/iup-users ------------------------------------------------------------------------------ Developer Access Program for Intel Xeon Phi Processors Access to Intel Xeon Phi processor-based developer platforms. With one year of Intel Parallel Studio XE. Training and support from Colfax. Order your platform today. http://sdm.link/xeonphi _______________________________________________ Iup-users mailing list Iup-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/iup-users
