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Yes, there is a way to avoid this. Starting from Perl 5.8, you can use the lock_keys function provided in Hash:Util package, to lock your attributes, after you initialized them. One example here: package ex10; use Hash::Util; sub new { my $self = {}; $self->{ATTR_ABXCDEFG} = 1; $self->{ATTR_ABCXDEFG} = 2; $self->{ATTR_ABCDXEFG} = 3; $self->{ATTR_ABCDEXFG} = 4; $self->{ATTR_ABCDEFXG} = 5; bless($self); Hash::Util::lock_keys(%{$self}); return $self; } sub do_something_1 { my $self = shift; $self->{ATTR_ABCXDEFG} = 10; } sub do_something_2 { my $self = shift; print $self->{ATTR_ABCXDEFG}; } sub do_something_3 { my $self = shift; $self->{ATTR_AXBCDEFG} = 10; } sub do_something_4 { my $self = shift; print $self->{ATTR_AXBCDEFG}; } 1; use ex10; $e = new ex10; $e->do_something_1; $e->do_something_2; $e->do_something_3; #see what will happen, if you comment out this $e->do_something_4; #try to comment out this

In reply to Re: how to avoid mis-spelling hash keys? by pg
in thread how to avoid mis-spelling hash keys? by Gorilla

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