Node.js · Theory

CL Options

Theory

8/723

CL Options

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

Smallest example: the smallest CL Options cli example you can type. Type it, run it, and say what you see. If you can do that from memory, you know CL Options (cli).

From the example next to this theory — CL Options: find user 2, then list names.

Trap — only saying “CL Options cli” with no example. Fix that before you talk about advanced Node.js.

Viva — what is CL Options (cli)? Then show the smallest CL Options cli example you can type. Then name the trap.

Exam tip

What is CL Options (cli)? Show this: the smallest CL Options cli example you can type. Trap: only saying “CL Options cli” with no example.

Example

// CL Options
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));

CL Options: find user 2, then list names. Say both prints.

Short notes

DefCL Options (cli) — a short CL Options cli example in a script or API on localhost.
Rulethe smallest CL Options cli example you can type
Traponly saying “CL Options cli” with no example
Usea script or API on localhost

Node.js · Theory

CL Options

← All stacks

Theory

8/723

CL Options

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

Smallest example: the smallest CL Options cli example you can type. Type it, run it, and say what you see. If you can do that from memory, you know CL Options (cli).

From the example next to this theory — CL Options: find user 2, then list names.

Trap — only saying “CL Options cli” with no example. Fix that before you talk about advanced Node.js.

Viva — what is CL Options (cli)? Then show the smallest CL Options cli example you can type. Then name the trap.

Exam tip

What is CL Options (cli)? Show this: the smallest CL Options cli example you can type. Trap: only saying “CL Options cli” with no example.

Example

// CL Options
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));

CL Options: find user 2, then list names. Say both prints.

Short notes

DefCL Options (cli) — a short CL Options cli example in a script or API on localhost.
Rulethe smallest CL Options cli example you can type
Traponly saying “CL Options cli” with no example
Usea script or API on localhost

CL Options

Example

Short notes

Questions

CL Options

Example

Short notes

Questions