Function captures

[lpil]

foo(_, 1)

Is equivalent to

fn(x) { foo(x, 1) }

[OvermindDL1]

I supported that format in my MLElixir project as well for explicit partial application as well, however I also supported _1, _2, _3, etc... for repositioning arguments as well, like via foo(_3, a, _1, _2, b) became fun a1 a2 a3 -> foo(a3, a, a1, a2, b). I found it very useful. :-)

EDIT: You could mix and match them as well, the _'s just took whatever missing _#'s as expected, though honestly I wouldn't support that, only one form or the other in a given partial application, would be useful for partial applications inside partial applications then.

[lpil]

That's a nice suggestion, thanks!