vvshard

import 'package:flutter/material.dart';

const color = [Colors.black, Colors.white];

Widget cR(int iColor, double r, {Widget? child}) => DecoratedBox(
    decoration: BoxDecoration(color: color[iColor], shape: BoxShape.circle),
    child: SizedBox.square(dimension: r * 2, child: Center(child: child)));

Widget yinYang(double r, [double th = 1.0]) => Padding(
    padding: const EdgeInsets.all(5),

vvshard

import 'dart:math' show pi;
import 'package:flutter/material.dart';

Path yinYang(double r, double x, double y, [double th = 1.0]) {
  cR(double dY, double radius) => Rect.fromCircle(center: Offset(x, y + dY), radius: radius);
  return Path()
    ..fillType = PathFillType.evenOdd
    ..addOval(cR(0, r + th))
    ..addOval(cR(r / 2, r / 6))
    ..addOval(cR(-r / 2, r / 6))

vvshard

import 'package:flutter/material.dart';

void main() => runApp(FittedBox(
    child: CustomPaint(painter: TreePainter(), size: const Size(2400, 1600))));

class TreePainter extends CustomPainter {
  @override
  void paint(Canvas canvas, Size size) {
    final stroke = Paint()
      ..style = PaintingStyle.stroke

vvshard

// ==UserScript==
// @name        Preparing rustdoc for 'Translate Web Pages' add-on
// @description Disables translation of navigation sections and entity names (both in text and in search results), as well as source code blocks in rustdoc pages (ex: in doc.rust-lang.org/stable/std/). !!! To translate comments in the code examples and in the code on the [src] pages, you must enable translation for <PRE> tags in "Translate Web Pages" preferences.
// @version     1.0.5
// @author      vvshard
// @grant       none
// @license     MIT
// ==/UserScript==

if (["rustdoc", "rustdoc-page"].some(clNm => document.body.classList.contains(clNm))){