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awwaiid/blah.pl

Created February 10, 2014 19:13
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blah.pl
use HOI::Match;
psub point_extract =>
"point (x _) :: r" => sub { my %args = @_; $args{x} + point_extract($args{r}) },
"nil" => sub { 0 };
point_extract(
[
{"type" => "point", "val" => [ 1, 2 ]},
{"type" => "point", "val" => [ 2, 4 ]},
{"type" => "point", "val" => [ 3, 6 ]},
]
) # we will get 6
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