Problem 54224. Curry a function handle

Devin Allen

8 solvers

1 likes

Solve

Solve Later

From Wikipedia, Currying:
In mathematics and computer science, currying is the technique of converting a function that takes multiple arguments into a sequence of functions that each takes a single argument. For example, currying a function f that takes three arguments creates three functions: 
     becomes
    
    
    
or called in sequence:  (note that this syntax is not supported in MATLAB (sadly!), though it is in GNU Octave)
Given f, a function handle, and n, the number of input arguments to later be passed into f, create a function handle g that is a curried form of f. Similar to the above example:
> curriedMax = currify(@max,3);
> curriedMax(magic(5)); ans([]); ans('all')
ans =
     25
> curriedMax(magic(3))([])('all') %only works in Octave
Both of these are equivalent to 
> max(magic(5),[],'all')