Re^2: can I change hash keys or values directly

I appreciate the replies guys. I guess I was already on the best approach using the slice. The link to "values" and it's helpful to know that they be operated on directly. I tried it

map s.(\d+).$1+1/e,values %nums;
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which worked great. Love it. Helpful & useful. TYVM

If I'm reading that right, it does appear from that link that as an experiment, perhaps keys also worked that way for some brief Perl versions:

 
use 5.012;  # so keys/values/each work on arrays
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Re^3: can I change hash keys or values directly by choroba (Cardinal) on Jan 29, 2021 at 22:44 UTC
> perhaps keys also worked that way No, it means you can write `#!/usr/bin/perl use warnings; use strict; use feature qw{ say }; use Syntax::Construct qw{ keys-array }; # More explicit than 5.012. my @array = qw( abc def ); my @keys = keys @array; # 0, 1 my @values = values @array; # abc, def while (my ($index, $value) = each @array) { say "$index $value"; # 0 abc, 1 def }` [download] `map{substr$_->[0],$_->[1]\|\|0,1}[\\|\|{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^ARGV,3]`	[reply] [d/l] [select]

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Re^3: can I change hash keys or values directly
by choroba (Cardinal) on Jan 29, 2021 at 22:44 UTC

> perhaps keys also worked that way

No, it means you can write

#!/usr/bin/perl
use warnings;
use strict;
use feature qw{ say };

use Syntax::Construct qw{ keys-array };  # More explicit than 5.012.

my @array = qw( abc def );

my @keys = keys @array;      # 0, 1
my @values = values @array;  # abc, def
while (my ($index, $value) = each @array) {
    say "$index $value";     # 0 abc, 1 def
}
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map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]

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