Re: Re: Optimization of array looping...

Darn, my brain has gone blank. There must be a better way to specify the slice continues until the end of the array: $parent2[-1] is the last element, but @parent[3..-1] is empty even if @parent2 has more than four elements.

This will DWYM:

@parent[3..@parent-1]
[download]

But this is simply the replacement for the ~~deprecated~~ $#array syntax.

Update: removed deprecated.

-QM
--
Quantum Mechanics: The dreams stuff is made of

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Re: Re: Re: Optimization of array looping... by antirice (Priest) on Mar 04, 2004 at 05:17 UTC
I think you are a bit confused. Taking a look at perldoc perlvar, one might note that $# is deprecated. This is not the same $#array of which you speak. Your code above breaks whenever anyone bothers changing $[ (perhaps an insane programmer wishing to update your code?). Your code above should instead be written as: `@parent[3..@parent-1+$[]` [download] Of course, `@parent - 1 + $[` is a long way of saying `$#parent`. So why not just use it? antirice The first rule of Perl club is - use Perl The ith rule of Perl club is - follow rule i - 1 for i > 1	[reply] [d/l] [select]
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Re: Re: Re: Optimization of array looping... by jweed (Chaplain) on Mar 04, 2004 at 05:00 UTC
perldata and perldelta don't seem to mention this deprecation. Is this a bleedperl change? Personally, I think the `$#array` syntax is more manageable than the ugly @array-1 (semantically, this makes little sense) and (heaven forbid!) scalar(@array)-1 (clearer but just as semantically useless.) Just by $.02 Code is (almost) always untested. http://www.justicepoetic.net/	[reply] [d/l]