Re^2: while loop

[blazar]

Well, quite about the only answer that such a question deserves. But while you're there, and the op is clearly a newbie, please do not use the &-form of sub call, since we take care all the time of deprecating it to avoid this cargo-culted remnant from Perl 4 to spread further. If you want to underline that you're doing a sub call, then you may use empty parens...

[mantadin]

Thanks for the info; I did not know that the &-form is considered a cargo-culted remnant.

OTOH, I am not aware of the &-form having any useful advantage. AFAIK, &f, if called from within another sub, is equivalent to f(@_) "but faster", as the camel books states (3rd edition, Chapter 6, scoping issues).

[blazar]

Well, perldoc perlsub explains it all. In brief, do not use the &-form unless you know what you're doing, i.e. either circumvent prototypes, if you're giving an explicit arg list or make current @_ visible to the sub, as you say.

[gellyfish]

... or when dereferencing a CODEREF or a symbolic reference to a subroutine name, or taking a reference to a subroutine, or when using the subroutine as an argument to goto ...

/J\