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zoffixznet/gist:8965cd3aad133a84ffba5f24db99f354

Created May 17, 2016 16:51
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gistfile1.txt
subset IntPair of Pair where {
die "Key $_.key() is not an Int" unless val($_.key.Str) ~~ Int;
die "Value $_.value() is not an Int" unless .value ~~ Int;
True
}
my @edges of IntPair =
1 => 2,
3 => 4,
6 => 2;
sub foo(@e where {.all ~~ IntPair}) { say @e }
foo(@edges)
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