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June 27, 2021 13:50
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Identity type in JS/Node (without classes)
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| import { Identity } from './Identity' | |
| let res = Identity(3) | |
| .map((v) => v * 3) | |
| .map((v) => v * 3) | |
| .map((v) => v * 33) | |
| .chain(Identity) | |
| console.log(res.map((v) => v - 1).inspect()) // => 'Identity(890)' |
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| export const Identity = (x) => ({ | |
| chain: (f) => f(x), | |
| unwrap: () => x, | |
| map: (f) => Identity(f(x)), | |
| inspect: () => `Identity(${x})`, | |
| }) |
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