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in reply to Re^3: while loop
in thread while loop

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.

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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\

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      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.

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