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Mixins vs Extensions in Dart

The Major Differences

• Mixins allow for an adapted multiple inheritance.
  • Though they have the limitation that you cannot have mixins inheriting mixins.
• Extensions let you add new methods to a class but not state (new instance variables).
  • But you can use stuff like the [Expando object][expando].
  • They can't override methods either.

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Gathering Code Coverage

1. Install the coverage package:

   pub global activate coverage

2. Create a test file for running all of the tests.
3. Run — in this case, the file with all of the tests is called .test_coverage.dart —:

   dart --pause-isolates-on-exit --disable-service-auth-codes --enable-vm-service=NNNN test/.test_coverage.dart

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Linux Heroic Commands

From a tutorial somewhere...

1. sudo !! : re-executing the last command as sudo.
2. Ctrl + X + E in the terminal to open an editor.
3. Create a super fast RAM disk (hard drive on the RAM):

   mkdir -p /mnt/ram

mount -t tmpfs /mnt/ram -o size=8192M

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Joker Baduk

1. 상대방의 돌로 2수 두세요 play two moves with your opponent stones..... Illegal moves are not allowed
2. 야호! Play two moves wherever you want
3. 꽝 pass
4. 가위,바위,보를 winner can change the opponent's stone to his buke....the one who has more buke shapes, gets two captured stone.
5. 1선에 3수를 play 3 moves on the first line
6. 공짜 한수 play one move and get another card
7. 상대에게 내 이름을 물어보세요 ask your opponent: what is my name? If he knows u give 2 points
8. 키가 큰 사람이 작은사람에게 taller gives 2points to the smaller one

psygo

Reflection in Dart

Unfortunately, [since mirrors currently bloat compiled code][no_support_mirrors], it isn't supported for Flutter or web apps. A [workaround][source_gen_tutorial] would be to use a package like [source_gen][source_gen].

dart:mirrors

Most of the info here, comes from [Understanding Reflection and Annotations in Dart tutorial][reflection_tutorial], from the Fullstack Dart and Flutter Tutorials YouTube channel. He also created a [gist][gist_tutorial] with it.

psygo

/// To run this, you can simply use:
///
/// ```sh
/// dart different_fixed_list_initializations.dart
/// ```

/// For more, check out the [`List` docs][list_docs].
///
/// The `UnmodifiableListMixin` and `FixedLengthListMixin` are actually
/// abstract classes, not mixins. They are both inside

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Immutability Resources for Dart

Resources for studying immutability in the context of OOP languages.

The numbering below is simply for differentiation.

~90% of the resources below come from Marcelo Glasberg.

0. How do I read this???

psygo

#j::
Send, nuclear launch codes
return

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/// Using `n == 1` won't work usually because the `n` input can be `0`.
int factorial(int n) => n == 0 ? 1 : n * factorial(n - 1);

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{
  "editor.tokenColorCustomizations": {
        "[One Dark Pro]": {
            "types": "#7BC374"
        }
    }
}