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fs.ftruncateSync() Method

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fs.ftruncateSync() Method

fs.ftruncateSync() Method sits in an upload job. Vikram’s job is read a big CSV. Write that first.

For fs.ftruncateSync() Method, npm is in play. Don’t blame it until you have traced read a big CSV.

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

Use fs.ftruncateSync() 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 fs.ftruncateSync() Method, check loading the whole file into RAM first.

fs.ftruncateSync() Method is not a lonely heading. Vikram ties it to read a big CSV.

Close fs.ftruncateSync() Method with: “If I skip it, read a big CSV goes wrong like this: loading the whole file into RAM.”

Exam tip

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

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);

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

Short notes

Deffs.ftruncateSync() Method — Vikram uses it for read a big CSV in an upload job.
Rulefs.ftruncateSync() Method → createReadStream.
Rememberfs.ftruncateSync() Method + npm (an upload job).
Usefs.ftruncateSync() Method in an upload job (read a big CSV).
Trapfs.ftruncateSync() Method — loading the whole file into RAM.
Exfs.ftruncateSync() 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);

fs.ftruncateSync() Method

Example

Short notes

Questions

fs.ftruncateSync() Method

Example

Short notes

Questions