Call functions with context
JavaScript, Function · Jun 13, 2021
Given a key and a set of arguments, call them when given a context.
- Use a closure to call
keywithargsfor the givencontext.
const call = (key, ...args) => context => context[key](...args);Promise.resolve([1, 2, 3])
.then(call('map', x => 2 * x))
.then(console.log); // [ 2, 4, 6 ]
const map = call.bind(null, 'map');
Promise.resolve([1, 2, 3])
.then(map(x => 2 * x))
.then(console.log); // [ 2, 4, 6 ]
