BufferedWriter constructor

Creates a buffering character-output stream that uses a default-sized output buffer.

Parameters

• writer: The underlying character writer
• bufferSize: The buffer size (default: 8192 characters)

Example

final buffered = BufferedWriter(FileWriter('output.txt'));
final largeBuffered = BufferedWriter(
  FileWriter('large_output.txt'), 
  bufferSize: 65536
);

Writes text to a character-output stream, buffering characters to provide efficient writing of characters, arrays, and strings.

The buffer size may be specified, or the default size may be used. The default is large enough for most purposes.

Example Usage

// Basic buffered writing
final buffered = BufferedWriter(FileWriter('output.txt'));
try {
  await buffered.write('Hello, World!');
  await buffered.writeLine('This is a new line.');
  await buffered.flush();
} finally {
  await buffered.close();
}

// Writing large amounts of data efficiently
final buffered = BufferedWriter(FileWriter('large_output.txt'), bufferSize: 65536);
try {
  for (int i = 0; i < 10000; i++) {
    await buffered.writeLine('Record $i: ${generateLargeString()}');
  }
  await buffered.flush();
} finally {
  await buffered.close();
}