There is absolutely no reason to use double semicolons in practice. The only place you really should see it is when using the repl.

Yeah, it makes me think he doesn't understand them in OCaml.

	▲	acjohnson55 4 days ago \| parent [-]
		I worked in OCaml for a year and I couldn't tell you by memory what the difference was. I remember being very annoyed by OCaml's many language quirks.