Jonathan Scott Duff skribis 2005-05-14 9:49 (-0500):
> Then surely $leaf = [.{}] %hash, $k1, $k2, $k3
> is the same as $leaf = %hash .{} $k1 .{} $k2 .{} $k3
Then perhaps the easy way out is to make .{} $key and .[] $index valid
syntax.
Or perhaps [] can play the role of infix list operator, to support
postcircumfixes:
my $leaf = %hash [.{}] @keys
> $leaf_value = [$^a.{$^b}] %hash, @keys;
Once arbitrary expressions are valid in [], its purpose is lost as a
meta-operator. You can write the above with "normal" reduce:
my $leaf = reduce { $^a.{$^b} }, \%hash, @keys;
Since writing that line, I understand how adding a \ can make Damian's
example work (provided that postcircumfix operators are supported in
that way). I wasn't realising that %hash.{$k1} would of course be
another hashref. Somehow I was thinking about a string.
Juerd
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