Re^3: while loop

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).

Comment on Re^3: while loop

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Re^4: while loop by blazar (Canon) on Apr 26, 2006 at 10:23 UTC
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.	[reply] [d/l] [select]
Re^5: while loop by gellyfish (Monsignor) on Apr 26, 2006 at 10:28 UTC
... 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\	[reply] [d/l]
Re^6: while loop by blazar (Canon) on Apr 26, 2006 at 10:37 UTC
Indeed! And well done to point out - although we were talking about sub calls. However when dereferencing I'd recommend using (again: unless one knows what she's doing and has good reasons to!) `$subref->(@args);` [download] This is not merely cosmetic: I actually met a situation in which a module using `&$subref(@args)` caused a bad interaction with some subs.	[reply] [d/l] [select]