qqq-tech

httpClient = {
	get: function( url, data, callback ) {
		var xhr = new XMLHttpRequest();
		
		xhr.onreadystatechange = function () {
			var readyState = xhr.readyState;

			if (readyState == 4) {
				callback(xhr);
			}

qqq-tech

#!/bin/bash

# this tool will automate firmware extraction and unpacking using FT232R-type adaptors (like BusPirate) and a SOIC clip placed on a chip to dump
# install the necessary software:
#$ sudo apt install flashrom binwalk || echo 'git clone?'
# pump up binwalk with additional packages and libraries
#$ bash <(curl -s https://raw.githubusercontent.com/devttys0/binwalk/master/deps.sh)
# place the clip on the chip, connect it to the adaptor, which sould be connected to your PC (with drivers installed) and launch the script:
# chip => clip => adaptor => PC => script

qqq-tech

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package com.example.http.authenticate;

import java.io.*;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;

qqq-tech

#include <iostream>

/// http://msdn.microsoft.com/en-us/library/windows/desktop/aa383745(v=vs.85).aspx#macros_for_conditional_declarations
#define _WIN32_WINNT 0x05010300 //Windows XP SP3

#include <windows.h>
#include <winbase.h>
#include <aclapi.h>
#include <sddl.h>

qqq-tech

if (!('performance' in window)) {
  window.performance = {
    now: function() {
      return +new Date();
    }
  };
}

function trace(text) {
  console.log((window.performance.now() / 1000).toFixed(3) + ": " + text);

qqq-tech

/*  garp.c - Send IPv4 Gratuitous ARP Packet

    Usage Example: sudo ./garp eth0

    Copyright (C) 2011-2013  P.D. Buchan (pdbuchan@yahoo.com)
    Copyright (C) 2013       Seungwon Jeong (seungwon0@gmail.com)

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or

qqq-tech

Postgres Master Slave Failover & Failback

start

docker run -it --rm -p 5551:5432 --name=db1 --hostname=db1 ubuntu:20.04 bash
docker run -it --rm -p 5552:5432 --name=db2 --hostname=db2 ubuntu:20.04 bash

qqq-tech

#pragma once

#include "Audio.h"

Audio::Audio(std::string str) {
	if (str.substr(str.size() - 4) != ".wav")
		throw std::invalid_argument("Can only read WAV files!");
	load_wav(str);
}

qqq-tech

#! jruby

require 'java'
java_import 'java.net.InetSocketAddress'
java_import 'java.net.InetAddress'
java_import 'java.net.DatagramSocket'
java_import 'java.net.DatagramPacket'
java_import 'java.net.SocketTimeoutException'
java_import 'java.util.concurrent.SynchronousQueue'

qqq-tech

토비님의 스프링 부트 강의

스프링 부트가 무엇인지 궁금하면 레퍼런스 문서를 보세요!

⇒ 스프링 부트는 stand-alone, 업무에 사용할 수 있는 수준의 스프링 기반 애플리케이션을 쉽게 만들 수 있도록 만들어주는 프레임워크라고 생각하면 된다. (스프링에서 무엇을 선택할지 고민을 줄여주는 도구)

⇒ 스프링을 사용하는 것의 Best-Practice들이 적용되어 있음.

가능하면 인텔리제이 상용버전을 사용하세요.