call javascript Code Snippet in 2024
functionadvanced
Last Updated: 20 April 2024
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 ]
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