Quark v1.0.1 Quark.Curry

Currying breaks up a function into a series of unary functions that apply their arguments to some inner n-ary function. This is a convenient way to achieve a general and flexble partial application on any curried function.

Summary

Functions

curry(fun)

This allows you to curry a function at runtime, rather than upon definition

uncurry(fun)

Convert a curried function to a function on pairs

uncurry(fun, arg)

Apply an argument to a function

Macros

defcurry(head, list)

Define a curried function

defcurryp(head, list)

Define a curried private function

Functions

curry(fun)

Specs

curry((... -> any)) :: (any -> any)

This allows you to curry a function at runtime, rather than upon definition.


iex> curried_reduce_3 = curry &Enum.reduce/3
iex> {_, arity} = :erlang.fun_info(curried_reduce_3, :arity)
iex> arity
1

iex> curried_reduce_3 = curry &Enum.reduce/3
iex> import Quark.Curry
iex> curried_reduce_3.([1,2,3]).(42).(&(&1 + &2))
48

uncurry(fun)

Specs

uncurry((any -> (any -> any))) :: (any, any -> any)

Convert a curried function to a function on pairs


iex> curried_add = fn x -> (fn y -> x + y end) end
iex> add = uncurry curried_add
iex> add.(1,2)
3

uncurry(fun, arg)

Specs

uncurry((... -> any), any) :: any

uncurry((any -> any), [any]) :: any

Apply an argument to a function


iex> add_one = &(&1 + 1)
iex> uncurry(add_one, 1)
2

iex> curried_add = fn x -> (fn y -> x + y end) end
iex> add_one = uncurry(curried_add, 1)
iex> add_one.(3)
4

Macros

defcurry(head, list)

Define a curried function

defcurryp(head, list)

Define a curried private function