MGF discussion
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# See https://www.reddit.com/r/ProgrammingLanguages/comments/1lguxx1/a_grammar_specification_language_idea/
say(add(42,99)); # 282 # `add` calls `add` function.
sub add (|args) { args.sum * 2 } # `sub add` declares `add` function.
sub infix:<+> (|args) { args.sum * 3 } # `sub infix:<+>` declares infix `+`.
say 42 + 99; # 423 # `+` invokes infix op declared above.
Raku
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