curry(f)

Convert a function that accepts multiple arguments into an equivalent chain of single argument functions. Functions are chained as single argument anonymous functions that return single argument functions.

If multiple arities of a function exist, the one with the least number of arguments greater than 1 will be curried.

Examples

julia> curry(map)(sqrt)(1:4)
4-element Array{Float64,1}:
 1.0
 1.4142135623730951
 1.7320508075688772
 2.0

# arities 1 and greater than 2 exist for -, but arity 2 will be choosen for currying
julia> curry((-))(9)
#119 (generic function with 1 method)

julia> curry((-))(9)(1)
8

partial(f, x...)

Takes a function f and fewer than the normal arguments to f, and returns a function that takes a variable number of additional args. When called, the returned function calls f with args + additional args.

swap(f)

Return a function with a reordered argument list. Reordered so first argument becomes the last.