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Re^2: Ignore Case when comparing Hash Keys

by ctilmes (Vicar)
on Nov 15, 2010 at 19:21 UTC ( #871553=note: print w/replies, xml ) Need Help??


in reply to Re: Ignore Case when comparing Hash Keys
in thread Ignore Case when comparing Hash Keys

Or just store the original key as the value of the canonicalized (lower-cased) hash. Look up in the lower case hash to find the key, then use the value of that hash to look up the value in the original hash.
#! /usr/bin/perl %hash1 = ("John", 43, "Paul", 25, "Marie", 22); %hash2 = ("john", 43, "Paul", 25, "marie", 22); my %lc_hash1 = map { lc $_ => $_ } keys %hash1; while (($KEY_2, $VALUE_2) = each %hash2){ if (exists $lc_hash1{lc $KEY_2}){ print "$KEY_2 : Matched\n"; print "Keys are: $lc_hash1{lc $KEY_2}, $KEY_2\n"; print "Values are: $hash1{$lc_hash1{lc $KEY_2}}, $VALUE_2\n"; } else{ print "$KEY_2 : Did not match\n"; } }

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Re^3: Ignore Case when comparing Hash Keys
by avidcoder (Novice) on Nov 15, 2010 at 19:56 UTC
    ctilmes --- Thanks a lot. This works great!!! Just the way I want it to. You saved me a ton of time. Thankyou all.

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[Corion]: Meh, I found another Amazon "used" scam reseller... If a product sells for "almost new" at half the price, it's a scam, most likely...
[ambrus]: Corion: that's not true. Actually for Christmas and Thanksgiving, a lot of people buy electronics such as cameras as present, then many of them figure out they don't need it,
[ambrus]: and the electronics gets reselled almost new, but it has to be sold at half price because otherwise everyone chooses to buy the new product which has fewer risk of selling damaged products labelled as almost new.
[ambrus]: You can actually get a lot of useful cheap really almost new products that way, with only a little risk of scams.
[ambrus]: That's what some of the "Black Friday" sales are about.
[Corion]: ambrus: Well, usually, these people don't have in their description "mail me at dodgy_reseller # g m a i l | co m" , replace the "#" by "@" :)
[Corion]: Oh, and the "o" in "com" is a zero

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