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Postings from January 2011
Abigail <abigail <at> abigail.be> writes:
>> % perl -E '@a = ("1"); say "1 x" ~~ @a'
>>
>> % perl -E '@a = (1); say "1 x" ~~ @a'
>> 1
>>This is the only place in everyday Perl programming where the difference is
>>noticeable.
>
>False, unfortunally.
>
> $ perl -wE 'say 10 | 33'
> 43
Ah - I do not use the | operator in everyday programming (in fact, I don't think
I have ever used it) so I didn't think of this case.
>And it can even be more subtle:
>
> $ perl -E '$a = $b = "abc100"; 0 + $b; say $a; say $b;
> $a ++; $b ++; say $a; say $b'
That is a nasty one. Surely the expression 0 + $b should not mutate the value
of $b. I'm surprised this is not considered a bug?
--
Ed Avis <eda@waniasset.com>
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