dongyuwei

.page {
  position: relative;
  width: 1000px;
  height: 800px;
  border: 1px solid red;

  .foo {
    background-color: red;
    position: absolute;
    transition: all 2s ease 0s;

dongyuwei

const Reconciler = require("react-reconciler");

function traceMethod(obj) {
  return new Proxy(obj, {
    get(target, propKey) {
      const origMethod = target[propKey];
      if (typeof origMethod === 'function') {
        return function (...args) {
          console.log('propKey, args:', propKey, args);
          return origMethod.apply(target, args);

dongyuwei

# bash cli
sbt "testOnly akka.stream.javadsl.FlowTest"

# in sbt interactive cli 
sbt >
testOnly akka.stream.javadsl.FlowTest

dongyuwei

import { range, merge, Subject } from 'rxjs';
import { take, takeLast, multicast } from 'rxjs/operators';

range(1, 10)
  .pipe(
    multicast(() => new Subject(), o => merge(
      o.pipe(take(1)),
      o.pipe(takeLast(1)),
    )),
  )

dongyuwei

set HOMEBREW_NO_AUTO_UPDATE 1
alias st "git status"
alias tigf "tig --follow"

set -gx LC_ALL en_GB.UTF-8
set -gx ANDROID_HOME ~/Library/Android/sdk
set -gx ANDROID_SDK_ROOT ~/Library/Android/sdk
set -gx ANDROID_NDK ~/Library/Android/sdk/ndk-bundle
set -gx ANDROID_NDK_HOME ~/Library/Android/sdk/ndk-bundle

dongyuwei

cat /Users/dongyuwei/.proxychains/proxychains.conf

strict_chain
proxy_dns  force
remote_dns_subnet 224
tcp_read_time_out 15000
tcp_connect_time_out 8000
localnet 127.0.0.0/255.0.0.0
quiet_mode

dongyuwei

wget --load-cookies=cookies.txt -c https://download.developer.apple.com/Developer_Tools/Xcode_11_Beta_2/Xcode_11_Beta_2.xip

dongyuwei

• https://chromium.googlesource.com/chromium/src/+/master/docs/contributing.md
• https://webkit.org/contributing-code/
• uber pushqueue

dongyuwei

上次培训有人问git bisect这个命令怎么应用，今天查了一下文档并实际动手练习了一下，如果项目有自动化测试，那么使用起来就比较简单了, 比如：

1. git bisect start master 2f381c3 master 也可以是特定的commit rev
2. git bisect run node test.js

很快就可以自动定位是哪个 commit让测试挂了。

但如果没有自动化测试，或者自动化测试覆盖不全，或者测试运行很慢（如e2e）测试，那么可能就需要人工介入，git bisect还有很多半自动化的运行模式，使用起来稍微复杂一些。

Math.log2(100) == 6.6， 100个commits只需要跑7次测试就可以找到bad commit。问题就是每次测试需要多久了。每次10分钟也需要70分钟了。

dongyuwei

{
  "version": "0.2.0",
  "configurations": [
    {
      "name": "Time-Travel Live",
      "type": "node-chakracore-time-travel-debugger",
      "request": "launch",
      "program": "${workspaceFolder}/test.js",
      "cwd": "${workspaceFolder}"
    }