So to get more modular, perhaps "namespace::onlykeep" or Moo::OnlyNew?

{
    package Foo;
    use Moo;
    has(('it', 'is', 'ro'));
    has(('bit', 'is', 'rw'));
    sub fit {
        warn $_[0]->bit, $_[0]->it;
    }
    use namespace::onlykeep qw/ fit new /;
    1;
}

use Data::Dump qw/ dd /;
my $f = 'Foo'->new('it', 'was', 'bit', 'ten');
dd($f);
$f->fit; ## should warn
dd($f->it, $f->bit); ## should die

[download]

Someone think of something please :)

In reply to Re^6: Any gotchas with CGI and Mouse running together? ( namespace::onlykeep , Moo::OnlyNew ) by Anonymous Monk
in thread Any gotchas with CGI and Mouse running together? by kcott

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