Re: prevent stringification for hash-keys

See the core module Hash::Util.

use strict;
use warnings;
use Hash::Util 'lock_keys';

my $key = 'foo';

lock_keys my %hash, ($key, 'bar');

$hash{$key}++;

$hash{'key'}++;

__END__
[download]

$ perl 1230007.pl
Attempt to access disallowed key 'key' in a restricted hash at 1230007
+.pl line 11.
[download]

Hope this helps!

The way forward always starts with a minimal test.

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Re^2: prevent stringification for hash-keys by morgon (Priest) on Feb 16, 2019 at 23:52 UTC
That's sort of a solution, but I still would need to explicitely call lock_keys on every hash I use. What I really want is a way to make `$hash{bare_word}` a compile-time error in a lexical scope...	[reply] [d/l]


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