I think it mimics (or is?) the system's errno. See: http://linux.die.net/man/3/errno
> Its value is significant only when the return value of the call indicated an error (i.e., -1 from most system calls; -1 or NULL from most library functions); a function that succeeds is allowed to change errno. > > Valid error numbers are all nonzero; errno is never set to zero by any system call or library function. 2011/11/5 Ken Peng <kenp...@freenet.de> > δΊ 2011-11-5 11:16, Anneli Cuss ει: > > $! is not guaranteed to be cleared if there was no error. This means you >> probably don't have a "Bad file descriptor" error, it's just the last >> value >> of $! (or 'errno'). >> > > That's confused. > Since there is not such an error, I was thinking $! or $@ shouldn't > include an error value. > > Thanks anyway. > > Ken. > > > -- > To unsubscribe, e-mail: beginners-unsubscr...@perl.org > For additional commands, e-mail: beginners-h...@perl.org > http://learn.perl.org/ > > >
