Node.js · Theory

Create Connection

Theory

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Create Connection

Don’t start Create Connection with jargon. Start with Create Connection on Neha's board. That is the whole point.

Create Connection on the board: one Create Connection step Neha can write from memory. Then say what Create Connection on Neha's board looks like after.

Create Connection exists so Neha can keep Create Connection on Neha's board correct in a small live site.

Create Connection shows up in a small live site. Name Create Connection on Neha's board, not “a real-world scenario”.

Don’t do this with Create Connection — only reciting the name of Create Connection. Interviewers spot it in ten seconds.

After Create Connection, Neha should still remember only reciting the name of Create Connection.

One breath for Create Connection, then Create Connection on Neha's board, then only reciting the name of Create Connection. Sit down.

Exam tip

For Create Connection: definition + a small live site + one failure.

Example

// Create Connection
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));

Create Connection: find user 2, then list names. Say both prints.

Short notes

DefCreate Connection — Neha uses it for Create Connection on Neha's board in a small live site.
RuleCreate Connection → one Create Connection step Neha can write from memory.
RememberCreate Connection + the event loop (a small live site).
UseCreate Connection in a small live site (Create Connection on Neha's board).
TrapCreate Connection — only reciting the name of Create Connection.
ExCreate Connection → Create Connection on Neha's board.

// Create Connection 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));

Create Connection

Example

Short notes

Questions

Create Connection

Example

Short notes

Questions