Instant Metho Curry

Today on 'Cooking with Metho', we'll be making a nice curry.

Ingredients

• 1 x metho - available in your local NPM
• 1 x Function prototype
• 1 x curry function (generic is fine)
• 1 x function of your choosing
• A pinch of JS knowledge

Method

• Add the metho to the bowl:

import * as Metho from "metho"

• To make the 'curried' sauce, combine the curry function and the Function prototype, using Metho to bind them together:

const target = Function.prototype

function curry(func) {
  return function curried(...args) {
    if (args.length >= func.length) {
      return func.apply(this, args)
    } else {
      return function(...args2) {
        return curried.apply(this, args.concat(args2))
      }
    }
  }
}

const curried = Metho.add(
  target,
  function() {
    return curry(this)
  }
)

• Add sauce to your chosen function for a delicious combination!

function myAdd(a, b) {
  return a + b
}

// without 'curried' sauce - kinda bland
console.log(myAdd(2, 3))   // 5

// with sauce - tasty!
const add2 = myAdd[curried](2)
console.log(add2(3))   // 5

// versatile! map it with an array
console.log([2, 4, 6].map(myAdd[curried](11)))   // [13, 15, 17]

Alternative Method

The main ingredients are also available pre-mixed as metho-function - also available in all good NPMs. Simply import the curried sauce straight from the packet, and continue as before:

import { curried } from 'metho-function'
...

That's all!

If you like this recipe or have any ideas on how to improve it, please drop me a line here or at the Metho cookery school.

jonrandy / metho

A new method for methods

jonrandy / metho-function

Function prototype extensions

Comments

[superwibr]

You strike again with another feature that exists in my library! Are our minds connected? :D Once again, your implementation is better than mine, but who knows, maybe the scales will topple soon... ;)

[Jon Randy 🎖️]

I have many more ideas for improvements to Metho, and more 'prototype extension' libraries to take advantage of it. As with everything though, it's just a question of finding the time 😑