does this differ from Hash::AsObject

Yes, since that uses AUTOLOAD, which means it doesn't provide full typo prevention:

use Hash::AsObject;
my $h = Hash::AsObject->new( foo => "bar" );
print $h->fOo, "\n";  # warning about undef

use Util::H2O;
my $o = h2o { foo => "bar" };
print $o->fOo, "\n";  # dies
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Plus Util::H2O has the extra goodies like custom methods that I wrote about.

Interesting, thanks! I noticed after your reply that it's not possible to use Hash::AsObject with L in one-liners (which I hadn't tried, I think); I imagine because of dueling AUTOLOAD trickery.

$ perl -ML -wE 'my $h = Hash::AsObject->new( foo => "bar" ); say $h->f
+oo'

Can't locate foo.pm in @INC (you may need to install the foo module)
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😞

I am usually under strictures(2) to catch typos, so it's not usually a feature I need in packages:

$ perl -MHash::AsObject -wE 'my $h = Hash::AsObject->new( foo => "bar"
+ ); say $h->f0o; say 42'

Use of uninitialized value in say at -e line 1.

42
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$ perl -MHash::AsObject -Mstrictures=2,1 -wE 'my $h = Hash::AsObject->
+new( foo => "bar" ); say $h->f0o; say 42'

Use of uninitialized value in say at -e line 1.
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Thanks!



The way forward always starts with a minimal test.