currying

greeting.js

const greet = (greeting, name) => {
  console.log(`${greeting} ${name}`);
};

greet("hello", "Adam");
greet("hello", "Mateusz");
greet("hi", "Mateusz");
greet("hi", "Adam");

const createGreeting = greeting => {
  return name => {
    console.log(`${greeting} ${name}`);
  };
};

const hiGreeting = createGreeting("hi");
const helloGreeting = createGreeting("hello");
hiGreeting("Adam");
hiGreeting("Mateusz");
helloGreeting("Mateusz");
helloGreeting("Adam");