Node.js · Theory

Buffer.includes() Method

Theory

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

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

Without Buffer.includes() Method, an upload job gets messy and read a big CSV is hard to trust.

Use Buffer.includes() Method when read a big CSV must stay clear. If a simpler Node.js step works, use that instead.

If read a big CSV breaks under Buffer.includes() Method, check loading the whole file into RAM first.

Place Buffer.includes() Method next to nearby Node.js work — createReadStream is the link.

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

Exam tip

Say Buffer.includes() Method in one breath, then createReadStream, then loading the whole file into RAM.

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

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