Re^6: Bug in Class::Struct?

That’s very interesting…

perl -MYAML -E '$vol = "asdf"; $x = { moo => scalar($vol =~ m/^HOLDING
+/) }; say $x->{moo} == 0'
1
[download]

But also, to me at least, very surprising and I wouldn’t want to see it in code.

Comment on Re^6: Bug in Class::Struct? Download Code

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Re^7: Bug in Class::Struct? (updated) by haukex (Archbishop) on Apr 23, 2020 at 21:30 UTC
I guess it depends: mapping it to a different value, as in `bool ? 1 : 0`, will definitely make it more clear (and also force scalar context). But using scalar is better than not using it at all, since if you've got a hash `{ moo => $vol =~ m/^HOLDING/, foo => 'bar' }` that's asking for trouble (and in some cases, security holes, like with CGI.pm's `param`). Update: Corrected the example hash	[reply] [d/l] [select]

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Re^7: Bug in Class::Struct? (updated)
by haukex (Archbishop) on Apr 23, 2020 at 21:30 UTC

I guess it depends: mapping it to a different value, as in bool ? 1 : 0, will definitely make it more clear (and also force scalar context). But using scalar is better than not using it at all, since if you've got a hash { moo => $vol =~ m/^HOLDING/, foo => 'bar' } that's asking for trouble (and in some cases, security holes, like with CGI.pm's param).

Update: Corrected the example hash

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[select]