RosettaCodeData/Task/Mutual-recursion/Tailspin/mutual-recursion.tailspin

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templates male
when <=0> do 0 !
otherwise def n: $;
$n - 1 -> male -> female -> $n - $ !
end male
templates female
when <=0> do 1 !
otherwise def n: $;
$n - 1 -> female -> male -> $n - $ !
end female
0..10 -> 'M$;: $->male; F$;: $->female;
' -> !OUT::write