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ramda: objects (compose, inc, prop, assoc, evolve, always, add)
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import { compose, inc, prop, assoc, evolve, always, add } from "ramda" | |
const nextAge = compose( | |
inc, | |
prop("age"), | |
) | |
console.log("nextAge", nextAge({ age: 21 })) | |
const celebrateBirthday = person => assoc("age", nextAge(person), person) | |
const person = { age: 24 } | |
console.log("celebrateBirthday", celebrateBirthday(person)) | |
console.log("person", person) | |
const celebrateBirthday2 = evolve({ age: inc }) | |
console.log("celebrateBirthday2", celebrateBirthday2(person)) | |
const me = { | |
firstName: "Sébastien", | |
lastName: "Nicolaïdis", | |
birthDate: new Date("1979-09-13T15:00Z"), | |
age: 38, | |
hobbies: ["Rock climbing", "Horse riding", "Chess"], | |
} | |
const change = evolve({ | |
firstName: always("Bob"), | |
lastName: always("Bob"), | |
userName: always("Bob"), | |
age: add(20), | |
}) | |
console.log("(change(me)", change(me)) |
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