On Tue, Mar 10, 2009 at 12:09 AM, Larry Wall <la...@wall.org> wrote:
>
> Yes, the only difference between C<for> and C<map> is that you can
> only use C<for> at the start of a statement. But we're more liberal
> about where statements are expected in Perl 6, so you can say things
> like:
>
> my @results = do for @list -> $x {...};
> my @results = (for @list -> $x {...});
>
> and either of those is equivalent to:
>
> my @results = map -> $x {...}, @list;
>
> I also Officially Don't Care if you use map in a void context. :)
>
> Larry
>
I would propose there to be one difference between for an map: map
should bind its arguments read-only, for should bind them read-write.
That would make at least one bad practice an error.
Leon
