7urtle-currying.js

const L = require('@7urtle/lambda');

const myCurry = L.curry((a, b) => a + b);
const myNary = L.nary(a => b => a + b);

// myCurry and myNary can be called
// both as curried and n-ary.
myCurry(1)(2) === myCurry(1, 2);
// => true

currying.js

// currying: converting a function
// that takes multiple arguments
// into a sequence of functions
// that each takes a single argument

// unary - 1 argument, arity: 1
const myUnary = a => a + 1;
// binary - 2 arguments, arity: 2
const myBinary = (a, b) => a + b;

// n-ary fn to a sequence of unary fn
const myCurried = a => b => a + b;
myCurried(3)(2); // => 5

const partiallyApplied = myCurried(2);
// => b => 2 + b

partiallyApplied(5); // => 7