Consider:
perl -le '$hash{"foo-bar"} = 1; print $hash{foo-bar}'
[no result]
perl -le '$hash{"foobar"} = 1; print $hash{foobar}'
1
I sort of understand this: in the first script, Perl treats foo-bar as
a subtraction, and sets $hash{0} to 1. In the second one it assumes
you just left off some quotes.
My question: since Perl doesn't have constants, what exactly IS
foo-bar? Why is it 0?
The behavior above seems inconsistent to me. Is it considered a bug?
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