Node.js · Theory

Functional Programming in Node.js

Theory

640/723

Functional Programming in Node.js

Functional Programming (node js) is a Node.js topic. In plain words you use it for a short Functional Programming node js example in a script or API on localhost. Don’t start with a slogan — start with that picture.

Smallest example: the smallest Functional Programming node js example you can type. Type it, run it, and say what you see. If you can do that from memory, you know Functional Programming (node js).

From the example next to this theory — Functional Programming in Node.

Trap — only saying “Functional Programming node js” with no example. Fix that before you talk about advanced Node.js.

Viva: what is Functional Programming (node js)? Then show the smallest Functional Programming node js example you can type. Then name the trap.

Exam tip

What is Functional Programming (node js)? Show this: the smallest Functional Programming node js example you can type. Trap: only saying “Functional Programming node js” with no example.

Example

// Functional Programming in Node.js
const users = [
  { id: 1, name: "Asha" },
  { id: 2, name: "Ravi" },
];

function findUser(id) {
  return users.find((u) => u.id === id) ?? null;
}

console.log(findUser(2));
console.log(users.map((u) => u.name));

Functional Programming in Node.js: find user 2, then list names. Say both prints.

Short notes

DefFunctional Programming (node js) — a short Functional Programming node js example in a script or API on localhost.
Rulethe smallest Functional Programming node js example you can type
Traponly saying “Functional Programming node js” with no example
Usea script or API on localhost

Node.js · Theory

Functional Programming in Node.js

← All stacks

Theory

640/723

Functional Programming in Node.js

Smallest example: the smallest Functional Programming node js example you can type. Type it, run it, and say what you see. If you can do that from memory, you know Functional Programming (node js).

From the example next to this theory — Functional Programming in Node.

Trap — only saying “Functional Programming node js” with no example. Fix that before you talk about advanced Node.js.

Viva: what is Functional Programming (node js)? Then show the smallest Functional Programming node js example you can type. Then name the trap.

Exam tip

What is Functional Programming (node js)? Show this: the smallest Functional Programming node js example you can type. Trap: only saying “Functional Programming node js” with no example.

Example

// Functional Programming in Node.js
const users = [
  { id: 1, name: "Asha" },
  { id: 2, name: "Ravi" },
];

function findUser(id) {
  return users.find((u) => u.id === id) ?? null;
}

console.log(findUser(2));
console.log(users.map((u) => u.name));

Functional Programming in Node.js: find user 2, then list names. Say both prints.

Short notes

DefFunctional Programming (node js) — a short Functional Programming node js example in a script or API on localhost.
Rulethe smallest Functional Programming node js example you can type
Traponly saying “Functional Programming node js” with no example
Usea script or API on localhost

Functional Programming in Node.js

Example

Short notes

Questions

Functional Programming in Node.js

Example

Short notes

Questions