What is 'Currying'?

Question

I\'ve seen references to curried functions in several articles and blogs but I can\'t find a good explanation (or at least one that makes sense!)

Answer 1

Here you can find a simple explanation of currying implementation in C#. In the comments, I have tried to show how currying can be useful:

public static class FuncExtensions {
    public static Func> Curry(this Func func)
    {
        return x1 => x2 => func(x1, x2);
    }
}

//Usage
var add = new Func((x, y) => x + y).Curry();
var func = add(1);

//Obtaining the next parameter here, calling later the func with next parameter.
//Or you can prepare some base calculations at the previous step and then
//use the result of those calculations when calling the func multiple times 
//with different input parameters.

int result = func(1);