fizz templates
  $ mod 3 -> # !
  when <|=0> do 'Fizz' !
end fizz

buzz templates
  $ mod 5 -> # !
  when <|=0> do 'Buzz' !
end buzz

[ 1..100 -> '$->fizz;$->buzz;' ] -> $(.. as i; -> templates
  when <|=''> do $i !
  otherwise $ !
end)... -> '$;
' !