Curry

Implementation of Currying for Julia. https://en.wikipedia.org/wiki/Currying

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.
e.g. arities 1 and greater than 2 exist for -, but arity 2 will be choosen for currying.

Exports the following functions:

• curry
• partial
• swap

Implements the following puns:

• 🍛 (exported)
• ∂

Examples:

# convert from 0-based array to 1-based.  I use this all the time.
julia> 🍛(+)(1).([0,1,2,3]) |> show
[1, 2, 3, 4]

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

julia> curry((-))(9)
#119 (generic function with 1 method)

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

julia> curry(reduce; init=10)(+)(1:5)
25