title: partial tags: function,intermediate

Creates a function that invokes fn with partials prepended to the arguments it receives.

Use the spread operator (...) to prepend partials to the list of arguments of fn.

const partial = (fn: Function, ...partials: any[]) => (...args: any[]) =>
  fn(...partials, ...args);

const greet = (greeting, name) => greeting + " " + name + "!";
const greetHello = partial(greet, "Hello");
greetHello("John"); // 'Hello John!'