i list,
I'll swap from answering questions to asking question today. Hopefully, I wouldn't be
the only
person to learn something this way :)
Anyway, within some code (a module for CPAN actually), I want to write:
alarm $timeout
unless not implemented("alarm");
which reads rather nicely. This makes the module portable, since the alarm is a 'nice
to have'
feature. Making the implemented() function is a little harder.
I thought that the CORE psuedopackage would be enough, so I tried:
CORE->can("alarm");
which didn't do anything interesting. Do I have to actually use the function, just to
see if it
throws an error or not? If so, how do I call an arbitary built-in... CORE::$func()
doesn't appear
to work?
Probably I'll end up creating an xalarm() function, it'd be useful to be able to do
this kind of
checking. (fork/exec/shm/msg/chown... anyone?).
Jonathan Paton
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