Node.js · Theory

readableStreamBYOBReader.read(view[, options]) function in Node.js

Theory

612/723

readableStreamBYOBReader.read(view[, options]) function in Node.js

readableStreamBYOBReader.read(view[, options]) function (in node) is a Node.js topic. In plain words you use it for read a big CSV in an upload job. Don’t start with a slogan — start with that picture.

Smallest example: createReadStream. Type it, run it, and say what you see. If you can do that from memory, you know readableStreamBYOBReader.read(view[, options]) function (in node).

From the example next to this theory — readableStreamBYOBReader.

Trap — loading the whole file into RAM. Fix that before you talk about advanced Node.js.

Viva: what is readableStreamBYOBReader.read(view[, options]) function (in node)? Then show createReadStream. Then name the trap.

Exam tip

What is readableStreamBYOBReader.read(view[, options]) function (in node)? Show this: createReadStream. Trap: loading the whole file into RAM.

Example

// readableStreamBYOBReader.read(view[, options]) function 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));

readableStreamBYOBReader.read(view[, options]) function in Node.js: find user 2, then list names. Say both prints.

Short notes

DefreadableStreamBYOBReader.read(view[, options]) function (in node) — read a big CSV in an upload job.
RulecreateReadStream
Traploading the whole file into RAM
Usean upload job

// readableStreamBYOBReader.read(view[, options]) function 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));

readableStreamBYOBReader.read(view[, options]) function in Node.js

Example

Short notes

Questions

readableStreamBYOBReader.read(view[, options]) function in Node.js

Example

Short notes

Questions