i don’t really get the difference… i can do
...->Array.map(fn(x, _))
as well as
...->Array.map(fn(x, ...))
but what’s the actual difference here? also, why does … only work in the slot? should i prefer one or the other? what are their purposes?
_ is a pipe placeholder: Pipe | ReScript Language Manual
… Is partial application: Function | ReScript Language Manual
… only works in one spot, while you can use _ anywhere as a placeholder for a piped argument, which means you can only use it with a pipe. … can be used without a pipe.
1 Like