Re^2: why does push not default to $


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by LanX (Saint)

on Dec 04, 2008 at 21:47 UTC ( [id://728113]=note: print w/replies, xml )

Need Help??

Good argument, but whats the difference to

 print @b;
[download]

if @b is empty? It doesn't print $_

for (1..13) {
  print @b;
}
[download]

Furthermore there is no error with:

push @a, @b;
[download]

but you get a warning with

push @a;
[download]

so perl can distinguish between missing parameters and empty parameters...

Cheers Rolf

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Re^3: why does push not default to $_? by ikegami (Patriarch) on Dec 04, 2008 at 21:48 UTC
Yeah, I already noticed and updated my node. The only possible reason I could see if an undue burden on the parser, since it would be the first function to default the second argument. You could send a perl (wishlist) bug report?	[reply]
Re^4: why does push not default to $_? by LanX (Saint) on Dec 04, 2008 at 23:25 UTC
hmm, I thought it may be a compiler limitation on the first argument, but `split` defaults to $_ on its second argument, (' ' on first one) I think there is no logical reason! Cheers Rolf	[reply] [d/l]
Re^5: why does push not default to $_? by ikegami (Patriarch) on Dec 05, 2008 at 02:36 UTC
Ok, seems like it's proven there's no technical reason it can't be done.	[reply]

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