ডার্ট ফাইল সিস্টেম

import 'dart:io';

void main() async {
  File file = File("./api/document.txt");

  String data = await file.readAsString();

  print(data);
}

import 'dart:io';

void main() async {
  File file = File("./api/document.txt");

  if (await file.exists()) {
  await file.delete();
  }

  print("file delete successful");
}

import 'dart:io';

void main() async {
  File file = File("./api/document.txt");

  await file.writeAsString("প্রোগ্রামিং শিখুন - প্রোগ্রামিং দিয়ে আপনার ক্যারিয়ার গড়ুন");

  print("file writing successful");
}

import 'dart:io';

void main() async {
  File file = File("./api/document.txt");
  File copy = File("./api/temp/doc.txt");

  await file.copy(copy.path);

  print("file copy successful");
}

import 'dart:io';

void main() async {
  File source = File("./api/temp/doc.txt");
  File change = File("./api/temp/document.txt");

  await source.rename(change.path);

  print("file rename successful");
}

import 'dart:io';

void main() async {
  File file = File("./api/document.txt");

  print(await file.exists());
}

import 'dart:io';

void main() async {
  File file = File("./api/document.txt");

  print(await file.length());
}