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use Test::More;
use strict; use warnings FATAL => 'all';
use List::Objects::WithUtils 'array';
my $arr = array( 1 .. 3 );
my $mapval = $arr->mapval(sub { ++$_ });
is_deeply
[ $mapval->all ],
[ 2, 3, 4 ],
'mapval ok';
is_deeply
[ $arr->all ],
[ 1, 2, 3 ],
'original intact';
$mapval = $arr->mapval(sub { $_[0]++ });
is_deeply
[ $mapval->all ],
[ 2, 3, 4 ],
'mapval on $_[0] ok';
ok array->mapval(sub { 1 })->is_empty, 'empty array mapval ok';
done_testing;
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