Node.js · Theory

Buffer.compare() Method

Theory

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Don’t start Buffer.compare() Method with jargon. Start with read a big CSV. That is the whole point.

Do Buffer.compare() Method once by hand. createReadStream. Change one input. Say the new result out loud.

Buffer.compare() Method exists so Rohit can keep read a big CSV correct in an upload job.

Buffer.compare() Method shows up in an upload job. Name read a big CSV, not “a real-world scenario”.

Buffer.compare() Method trap — loading the whole file into RAM. Rohit loses marks for that every viva.

Buffer.compare() Method is not a lonely heading. Rohit ties it to read a big CSV.

Viva for Buffer.compare() Method — what it is → createReadStream → the mistake (loading the whole file into RAM).

Exam tip

Board: read a big CSV. Dry-run Buffer.compare() Method. Name the trap: loading the whole file into RAM.

const buf = Buffer.from("PrepPilot", "utf8");
console.log(buf.toString("utf8"));
console.log(buf.length);

Buffer.compare() Method — buffer holds raw binary data outside the V8 string heap.