Some functional languages work by transforming a multiargument function syntax into a collection of single argument functions. This process is called currying: it's named after logician Haskell Curry, who developed the theory from earlier concepts.
Currying is a technique for transforming a multiargument function into higher-order single argument functions. In a simple case, consider a function
; given two arguments x and y; this will return some resulting value, z. We can curry
into into two functions:
and
. Given the first argument value, x, evaluating the function
returns a new one-argument function,
. This second function can be given the second argument value, y, and it returns the desired result, z.
We can evaluate a curried function in Python as follows: f_c(2)(3). We apply the curried function to the first argument value of 2, creating a new function. Then, we apply that new function to the second argument value of 3.
This applies to functions...