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perlfunc:wantarray

by gods
on Aug 24, 1999 at 22:42 UTC ( #287=perlfunc: print w/replies, xml ) Need Help??

wantarray

See the current Perl documentation for wantarray.

Here is our local, out-dated (pre-5.6) version:


wantarray - get list vs array context of current subroutine call



wantarray



Returns TRUE if the context of the currently executing subroutine is looking for a list value. Returns FALSE if the context is looking for a scalar. Returns the undefined value if the context is looking for no value (void context).

    return unless defined wantarray;    # don't bother doing more
    my @a = complex_calculation();
    return wantarray ? @a : "@a";

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[ambrus]: 1nickg: obviously the gamers don't know. but anyway, I need the whole room backlit, because watching a monitor in a dark room (like many people do) is tiring for my eyes, even more so than doing it in a lit room.
[1nickt]: ambrus I agree. I suspect one's eyes are always trying to adjust across the boundary between very bright and very dark ... like a camera's autofocus struggling to choose the target.

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