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Postings from June 2004
Mark J. Reed wrote:
> On 2004-06-14 at 22:58:58, Matthew Walton wrote:
>
>>'it would be better to explicitly just say
>>
>>(@list.grep value) = undef
>>
>>although I think that might be supposed to be
>>
>>(@list.grep value) »= undef;
>
>
> Those do different things according to my understanding. The first
> removes all matching items from the list; the second replaces the
> matching items with undef.
>
> e.g. (please forgive any Perl6 syntax errors):
>
> [1,2,3,4,5].grep { $_ % 2 } = undef
>
> results in the list
>
> [2,4]
>
> while
>
> [1,2,3,4,5].grep { $_ % 2 } »= undef
>
> results in the list
>
> [undef, 2, undef, 4, undef]
That's a very good point, and seems rather likely. I wasn't thinking of
it that way. Quite cunning really.
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