stdlib.exit()

[Regan Heath]

On Mon, 20 Aug 2012 21:03:25 +0100, David <d at dav1d.de> wrote:

>> You could define a custom ExitException and throw that, catching it at
>> the top level and returning the error code stored inside it, from
>> main().  Not ideal, but it would work.
>
> Thi is really not ideal

Didn't I just say that.. :p

"Not ideal, but it would work."
  - Regan Heath

> , since this is for a argument-parser, --help should print the help and  
> then exit.

Still, it can be done..

int main(string[] args)
{
   int retval = 0;

   try
   {
    ParseArguments(args);
   }
   catch(ExitException e)
   {
     // Silent
     retval = e.retval;
   }
   catch(Exception e)
   {
     writefln("Error: %s", e...);
     retval = 1;
   }

   return retval;
}

void ParseArguments(string[] args)
{
   .. parse .. calls CmdHelp();
}

void CmdHelp()
{
   writeln(...);
   throw ExitException(0);
}

R

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