curry method
Curries the function.
Transforms it into a higher order function that takes a single argument and returns another function that takes a single argument and returns another function, as many times as many there were arguments in the original function.
Handy for partial application.
Implementation
CF7<B, C, D, E, F, G, H, T> curry(A a) => (b) =>
(c) => (d) => (e) => (f) => (g) => (h) => this(a, b, c, d, e, f, g, h);