Abstract exit success/failure codes

[Paul Backus]

On Thursday, 6 December 2018 at 03:14:24 UTC, Andrew Pennebaker 
wrote:
> Most operating systems today use the convention of 0 => 
> success, non-zero => fail for exit codes, but not all. Might D 
> offer a standard way to refer to a successful exit code vs. a 
> failing exit code, to foster cross-platform programs out of the 
> box? Some other languages already do this.

EXIT_FAILURE and EXIT_SUCCESS are defined in the D module 
core.stdc.stdlib [1], which corresponds to the standard C header 
stdlib.h.

The convention that 0 means the same thing as EXIT_SUCCESS is 
part of the C standard [2], so it should be portable to any 
platform that supports standard C.

[1] https://dlang.org/phobos/core_stdc_stdlib.html
[2] http://port70.net/~nsz/c/c89/c89-draft.html#4.10.4.3