Yes, it looks a little bit like OCaml (i.e. I'm not sure this has never been seen in any other language). :-)

# let divide ~x ~y = x / y;;
val divide : x:int -> y:int -> int = <fun>
# let half = divide ~y:2;;
val half : x:int -> int = <fun>
# half 120;;
- : int = 60
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