Re: My 'perldar' tells me there is a 'better' solution for this list operation

I see that two responses use a construct like

my %h1;
@h1{@l2}=();
[download]

I must admit I have seen this before (especially the second line) and I don't understand it. Is it just shorthand for populating a hash's keys collection with the elements of an array? Almost like

keys(%h1)=@l2;

?
[download]

Thanks,
T
P.S. I had no other word for that kind of intuitive feel for coding.

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I like computer programming because it's like Legos for the mind.

Replies are listed 'Best First'.
Re^2: My 'perldar' tells me there is a 'better' solution for this list operation by revdiablo (Prior) on Nov 04, 2006 at 01:45 UTC
A couple of quick examples may make it easier to understand what a hash slice is doing. This code: `@hash{"one", "two", "three"} = 1 .. 3;` [download] Is equivalent to: `($hash{one}, $hash{two}, $hash{three}) = 1 .. 3;` [download] And likewise, these are equivalent: `my @list = @hash{"one", "two", "three"};` [download] and `my @list = ($hash{one}, $hash{two}, $hash{three});` [download]	[reply] [d/l] [select]
Re^2: My 'perldar' tells me there is a 'better' solution for this list operation by Roy Johnson (Monsignor) on Nov 03, 2006 at 22:53 UTC
It's a hash slice, for populating multiple values of a hash from a list. Caution: Contents may have been coded under pressure.	[reply]