Node.js · Theory

Select Unique

Theory

42/723

Select Unique

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

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

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

Trap — only saying “Select Unique mysql” with no example. Fix that before you talk about advanced Node.js.

Viva: what is Select Unique (mysql)? Then show the smallest Select Unique mysql example you can type. Then name the trap.

Exam tip

What is Select Unique (mysql)? Show this: the smallest Select Unique mysql example you can type. Trap: only saying “Select Unique mysql” with no example.

Example

// Select Unique
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));

Select Unique: find user 2, then list names. Say both prints.

Short notes

DefSelect Unique (mysql) — a short Select Unique mysql example in a script or API on localhost.
Rulethe smallest Select Unique mysql example you can type
Traponly saying “Select Unique mysql” with no example
Usea script or API on localhost

Node.js · Theory

Select Unique

← All stacks

Theory

42/723

Select Unique

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

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

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

Trap — only saying “Select Unique mysql” with no example. Fix that before you talk about advanced Node.js.

Viva: what is Select Unique (mysql)? Then show the smallest Select Unique mysql example you can type. Then name the trap.

Exam tip

What is Select Unique (mysql)? Show this: the smallest Select Unique mysql example you can type. Trap: only saying “Select Unique mysql” with no example.

Example

// Select Unique
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));

Select Unique: find user 2, then list names. Say both prints.

Short notes

DefSelect Unique (mysql) — a short Select Unique mysql example in a script or API on localhost.
Rulethe smallest Select Unique mysql example you can type
Traponly saying “Select Unique mysql” with no example
Usea script or API on localhost

Select Unique

Example

Short notes

Questions

Select Unique

Example

Short notes

Questions