ingramchen

Model 層級管理

Domain Model 層的意義

一個傳統 Java Spring 的應用程式會分為三層 @Controller @Service @Repository，然後依據組織需求，再往下細分。 比方說 Service 層複雜的話，會增加 Gateway、Facade 層，或是我們組織獨有的 CoreService 層

另一個層級大部份 Java 組織會忽略的是 Domain Model 層，絕大多數 Java 開發者會開個 entity 或 model package，然後 將所有的 Entity 往裡面丟。然而該 Entity 只是一堆欄位和 getter/setter 的堆疊，也就是單純的 Table 的對應物件而已， 不具備任何 business logic

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// ==UserScript==
// @name         ptt hjkl keyboard
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  right hand keyboard to navigate term.ptt.cc
// @author       Ingram Chen
// @match        https://term.ptt.cc/
// @icon         https://www.google.com/s2/favicons?sz=64&domain=ptt.cc
// @grant        none
// ==/UserScript==

ingramchen

Environment

• Nobara (Fedora 39~)

Chrome

• download rpm to install
• force to sRGB profile (particulary in wayland)
• chrome://flags/#force-color-profile and set to sRGB

ingramchen

How to mimic full macOS Intellij behavior in Ubuntu

• Enviroment
  • Ubuntu 20.04
  • Intellij IDEA 2020

Ubuntu gnome shell shortcuts

ingramchen

### Full command line options

```
ffmpeg -f gif -i FOO.gif -pix_fmt yuv420p -c:v libx264 -movflags +faststart -filter:v crop='floor(in_w/2)*2:floor(in_h/2)*2' BAR.mp4
```

### Notie

 * output mp4 is encoded with h264, support Firefox/Chrome/Safari in Windows, Mac OSX, Android, and iOS.

ingramchen

// good for unit test
public static int scanAvailablePort() throws IOException {
  try (ServerSocket serverSocket = new ServerSocket(0)) {
    return serverSocket.getLocalPort();
  }
}

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protobuf
protobuf-2.6.1
protobuf-master

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<fontconfig>
  <match target="pattern">
    <test qual="any" name="family">
      <string>serif</string>
    </test>
    <edit name="family" mode="prepend" binding="strong">
      <string>Noto Sans T Chinese</string>
      <string>Noto Sans S Chinese</string>
      <string>Noto Sans Japanese</string>
      <string>Noto Sans Korean</string>

ingramchen

package com.liquable.nemo.model;

import static java.util.Arrays.asList;
import static java.util.stream.Collectors.groupingBy;
import static java.util.stream.Collectors.summingLong;

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;

ingramchen

Tomcat tomcat = ....

final Connector nioConnector = new Connector(Http11NioProtocol.class.getName());
nioConnector.setPort(58090);
nioConnector.setSecure(false);
nioConnector.setScheme("http");
nioConnector.setProtocol("HTTP/1.1");

try {
  nioConnector.setProperty("address", InetAddress.getByName("localhost").getHostAddress());