matanlurey

sealed class Result<T, E> {
  const Result();

  const factory Result.value(T value) = ValueResult._;
  const factory Result.error(E error) = ErrorResult._;
}

final class ValueResult<T, E> extends Result<T, E> {
  final T value;

matanlurey

diff --git a/Comparing-AOT-Snapshot-Sizes.md b/Comparing-AOT-Snapshot-Sizes.md
index 2355d82..a5631cc 100644
--- a/Comparing-AOT-Snapshot-Sizes.md
+++ b/Comparing-AOT-Snapshot-Sizes.md
@@ -1,10 +1,10 @@
 These instructions can be used to prepare a tabulated summary of the differences in the sizes of two AOT snapshots. The instructions assume that the Flutter Engine has been [setup](https://github.com/flutter/flutter/wiki/Setting-up-the-Engine-development-environment) on the host (at `FLUTTER_ENGINE` in these instructions).
 
-Build the AOT snapshot (`flutter build aot`) for the application but pass in the `--verbose` flag. We need to find the `gen_snapshot` invocation and re-run it with an extra option (`--print-instructions-sizes-to`). If you are instrumenting with a local engine, the `flutter build` takes the `--local-engine` flag as well.
+Build the AOT snapshot (`flutter build aot`) for the application but pass in the `--verbose` flag. We need to find the `gen_snapshot` invocation and re-run it with an ex

matanlurey

/// A short-lived [value] `T`, that conditionally is re-computed or re-fetched.
class Ephemeral<T> {
  final Future<T> Function() _fetch;
  final bool Function(T) _isExpired;

  /// Returns [value] by invoking [fetch].
  ///
  /// If [isExpired] returns `false` for a given value, the value is re-fetched.
  ///
  /// ```

matanlurey

// An interface that defines two mutable fields.
abstract class Ball {
  abstract int x;
  abstract int y;
}

// Implements the fields by initializing in constructor.
class BallImplConstructor implements Ball {
  @override
  int x;

matanlurey

/// ANSI escape sequence constants.
///
/// See also:
/// - <https://vt100.net/docs/vt100-ug/chapter3.html>.
/// - <https://www.lihaoyi.com/post/BuildyourownCommandLinewithANSIescapecodes.html>
library ansi;

/// Provides constants for 16-bit colors and styles using ANSI-escape sequences.
enum AnsiEscapes16Bit {
  /// Resets all styled output after this escape sequence.

matanlurey

Survey of Dependency Injection Packages for Dart

I searched for "Dependency Injection" and looked at the [top ~10 or so on pub.dev][top-10].

flutter_modular

Configuring

class AppModule extends Module {

matanlurey

void main() {
  // {Animals.cat: 0, Animals.dog: 1, Animals.pig: 2}
  print(Animals.values.toMap());
}

extension EnumHelper<E extends Enum> on Iterable<E> {
  Map<E, int> toMap() {
    return {for (final v in this) v: v.index};
  }
}

matanlurey

/// Parses a shell-style string [input] into a list of arguments.
///
/// ```dart
/// // [-x, 3, -y, 4, -abc, -beep=boop, foo, bar, baz]
/// print(argv('-x 3 -y 4 -abc -beep=boop foo "bar" \'baz\''));
/// ```
List<String> argv(String input) {
  const $space = 0x20;
  const $tab = 0x09;
  const $newLine = 0x0a;

matanlurey

void main() {
  late final a = Animal();
  print('Meow');
  print(a.sound);
}

class Animal {
  Animal() {
    print('CREATED: Animal');  
  }

matanlurey

extension IdentableStringSink on StringSink {
  /// Provides a delegating implementation of [StringSink] on [invoke].
  ///
  /// ```
  /// String example(String name, int age) {
  ///   final sink = StringBuffer();
  ///   sink
  ///     ..writeln('Identification')
  ///     ..indent(2, (sink) {
  ///       sink