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Re^4: why does push not default to $_?

by LanX (Sage)
on Dec 04, 2008 at 21:56 UTC ( #728118=note: print w/replies, xml ) Need Help??


in reply to Re^3: why does push not default to $_?
in thread why does push not default to $_?

Toolic, we perfectly know it's not implemented, we meditate WHY it's not implemented!

Here a simple usecase:

for (1 .. 100) { next if $_%2; push @even; }

Cheers Rolf

UPDATE...PS: Thanx for the interesting link to Builtin functions defaulting to $_

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Re^5: why does push not default to $_?
by davidrw (Prior) on Dec 06, 2008 at 01:01 UTC
    hmm. i think most people would write that usecase w/grep ...
    push @even, grep { !($_%2) } 1 .. 100;
    (i guess there could be other stuff going on in the loop, but then it's more likely that $_ would be named..
      Actually I was thinking the same thing, when I wrote it! : )

      As I said, it's just a *simple* usecase. But if you want to push to several arrays in the same loop, it may be handy!

      Anyway it's not that I'm terribly missing one-parameter push, I just want to understand the underlying idea! And maybe be able to predict in which cases I can use default parameter without looking it up.

      Cheers Rolf

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