Re: Working Through An Array In Chunks

Use splice! It not only chops out the section of the array, it returns what what was removed, and handles all the degenerate cases (when the array has fewer than 20 elements) as well.

my @array = (1 .. 55);

while ( my @chunk = splice @array, 0, 20 ) {
    print "<@chunk>\n";
}
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Comment on Re: Working Through An Array In Chunks Download Code

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Re^2: Working Through An Array In Chunks by Cody Pendant (Prior) on Dec 06, 2004 at 22:43 UTC
Thanks, that was the kind of answer I really wanted. I always forget "splice" for some reason, or get it mixed up with "slice". Why is it called "splice"? The literal meaning of that word is something more like "join", surely? Maybe it's a kind of combination of "slice" and "pop"? ($_='kkvvttuubbooppuuiiffssqqffssmmiibbddllffss') =~y~b-v~a-z~s; print	[reply]
Re^3: Working Through An Array In Chunks by Zed_Lopez (Chaplain) on Dec 07, 2004 at 01:42 UTC
"splice" makes perfect sense when you're extracting middle elements from an array and thus splicing together the leading and trailing elements. It makes, um, a little less sense when you're using it just to remove elements from the head or tail (to be clear, I'm speaking only of the command's name, not of its appropriateness for the task.) Though you could argue, say, that you're splicing together array position 0 and the middle of the array when you're removing elements from the head...	[reply]
Re^4: Working Through An Array In Chunks by Cody Pendant (Prior) on Dec 07, 2004 at 02:36 UTC
I get your point. Does the word in this context originate with Perl, or is it used in other languages as well? I want to write to Larry and ask. ($_='kkvvttuubbooppuuiiffssqqffssmmiibbddllffss') =~y~b-v~a-z~s; print	[reply]