All I want access to is the keys...
ok, but a hash has a key and a value. So your code should be:
my @keys = qw{ a b c d };
my %hash = map { $_,1 } @keys;
if you want your keys unaltered. If you want a "string increment" ( $_="a";$_++; # $_ is b now) its ok to use $_++.
In the loop
my %hash;
foreach ( @keys ) {
$hash{$_}++;
}
you are also using two variables - in a shortcut:
- you create a new hash slot with key $_
- you increment (the previously undefined) value for that key
So, it's the same thing with keys and values here. With map iterating over an array of keys, you must provide a value to have pairs to be stored as (key,value) in a hash.
--shmem
_($_=" "x(1<<5)."?\n".q·/)Oo. G°\ /
/\_¯/(q /
---------------------------- \__(m.====·.(_("always off the crowd"))."·
");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}
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