Uri Guttman wrote: >>>>>> "SHC" == Shawn H Corey <shawnhco...@gmail.com> writes: > > SHC> Uri Guttman wrote: > >> why the || '' ?? > >> > >> the help sub doesn't seem to exit/die > > SHC> Not proven; you cannot assume this. > > SHC> One school of thought about programming is that all functions must have > SHC> only one return and all programs must have only one exit. Therefore, > SHC> help() may return or it may not. > > that school leads to gotos and spaghetti logic. last/next/return are > your friends. i have see code where one exit is forced and it looks > forced. ewww.
I didn't say it was a good idea. And part of this philosophy is no goto's. Instead, use lots of state variables and if statements. > > SHC> Until you actually see the help() sub, you don't know if it returns. > > true. but i had to point out your own assumption that it DID return and > not exit. these are the trials and tribulations when we use PSI::ESP to > see invisible code. If it exited, then my extra code does nothing. If it didn't, my code set station to the default value. Yes, I'm assuming at declaration of $station it was assign a valid default. Here's the statement: my $station = ''; Call it paranoid defensive programming. ;) -- Just my 0.00000002 million dollars worth, Shawn Programming is as much about organization and communication as it is about coding. I like Perl; it's the only language where you can bless your thingy. -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/
