Larry Wall skribis 2005-11-18 11:36 (-0800):
> In Perl 5, to set a slice, you have to write
> %hash{ @keys } = @values;
"@"... :)
> whereas in Perl 6, it'd be nice to be able to say that with all
> the keys and values on the right side somehow.
Shouldn't a simple
%hash = @keys Y @values;
suffice?
I disagree, though, that --except for the case of initializing the hash
together with its declaration-- having the keys on the LHS is bad. It's
actually very good documentation, and to me, much clearer than any of
your examples:
> @bins:[] = label { calc_int($_) } LIST;
> %bins:{} = label { calc_str($_) } LIST;
> @bins.pairs = label { calc_int($_) } LIST;
> %bins.pairs = label { calc_str($_) } LIST;
Which really all are more complex than the initial example:
> map { calc_int($_) => $_ } LIST
Are commas optional after closures?
> %bins.pairs = %bins.pairs, label { calc_str($_) } LIST;
Is , higher precedence than = now?
> %bins.clear.pairs = label { calc_str($_) } LIST;
As someone who hates methods that return the invocant itself (even if
that isn't technically what happens), I have to object. Such combination
doesn't work well in my brain. I'd prefer:
%bins.clear;
%bins.pairs = ...;
Although I think the current situation with simple assignment is still
much better:
%bins = ...;
Juerd
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