Node.js · Theory

Stream writable.setDefaultEncoding() Method

Theory

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Stream writable.setDefaultEncoding() Method

Stream writable.setDefaultEncoding() Method is simple if you keep it on paper. Sara uses it for read a big CSV in an upload job.

For Stream writable.setDefaultEncoding() Method, an Express route is in play. Don’t blame it until you have traced read a big CSV.

Stream writable.setDefaultEncoding() Method exists so Sara can keep read a big CSV correct in an upload job.

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

Stream writable.setDefaultEncoding() Method miss: loading the whole file into RAM. Fix it before you talk about advanced Node.js.

After Stream writable.setDefaultEncoding() Method, Sara should still remember loading the whole file into RAM.

One breath for Stream writable.setDefaultEncoding() Method, then read a big CSV, then loading the whole file into RAM. Sit down.

Exam tip

For Stream writable.setDefaultEncoding() Method: definition + an upload job + one failure.

Example

const fs = require("fs");
const path = require("path");

const file = path.join(__dirname || ".", "demo.txt");
fs.writeFileSync(file, "hello node\n");
const text = fs.readFileSync(file, "utf8");
console.log(text.trim());
fs.unlinkSync(file);

Stream writable.setDefaultEncoding() Method — fs reads/writes files. Prefer promises/async APIs in real apps.

Short notes

DefStream writable.setDefaultEncoding() Method — Sara uses it for read a big CSV in an upload job.
RuleStream writable.setDefaultEncoding() Method → createReadStream.
RememberStream writable.setDefaultEncoding() Method + an Express route (an upload job).
UseStream writable.setDefaultEncoding() Method in an upload job (read a big CSV).
TrapStream writable.setDefaultEncoding() Method — loading the whole file into RAM.
ExStream writable.setDefaultEncoding() Method → read a big CSV.

const fs = require("fs"); const path = require("path"); const file = path.join(__dirname || ".", "demo.txt"); fs.writeFileSync(file, "hello node\n"); const text = fs.readFileSync(file, "utf8"); console.log(text.trim()); fs.unlinkSync(file);

Stream writable.setDefaultEncoding() Method

Example

Short notes

Questions

Stream writable.setDefaultEncoding() Method

Example

Short notes

Questions