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#include <array>
#include <assert.h>
#include <functional>
#include <iostream>
#include <set>
#include <stack>

class SudokuSolver {
private:
  std::array<int, 81> &sudoku_;

guoxiao

Colours in terminal

It's a common confusion about terminal colours... Actually we have this:

• plain ascii
• ansi escape codes (16 colour codes with bold/italic and background)
• 256 colour palette (216 colours + 16 ansi + 24 gray) (colors are 24bit)
• 24bit true colour ("888" colours (aka 16 milion))

printf "\x1b[${bg};2;${red};${green};${blue}m\n"

guoxiao

In August 2007 a hacker found a way to expose the PHP source code on facebook.com. He retrieved two files and then emailed them to me, and I wrote about the issue:

http://techcrunch.com/2007/08/11/facebook-source-code-leaked/

It became a big deal:

http://www.techmeme.com/070812/p1#a070812p1

The two files are index.php (the homepage) and search.php (the search page)

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// ==UserScript==
// @name Zhihu Filter
// @namespace skydiver
// @description I just want to hide some questions.
// @match http://www.zhihu.com/
// ==/UserScript==
var blacklist = ['苹果', '女朋友'];
var len = blacklist.length;
function process(){
  var items = document.querySelectorAll('.feed-item .question_link');

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#define MAX_EVENTS 10
struct epoll_event ev, events[MAX_EVENTS];
int listen_sock, conn_sock, nfds, epollfd;

/* Set up listening socket, 'listen_sock' (socket(),
  bind(), listen()) */

epollfd = epoll_create(10);
if (epollfd == -1) {
   perror("epoll_create");

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          ..... , . ..:I7?,.. ..   ...
          . ..  ZMMM$+ .. .:OMMM~   ...
      ,. .   OMN:...          , 7NN....
      .. . :8M, .. .         ... .7MO,
      . . ?M?  ....          .. ,...ZM
      ...~M. ....... ...  ........  .7M,. ,.
       .:M? .... ..,,:. , .. ........ MN ...
      . MM....... .ZMMZONND=,..... ...IM....
      . M=     ..8DM+.:MM::DN ,..:MD  .8O. .
      ,:M.     .=NIMM7 :MM,.MD,.IM+MM..+N. .

guoxiao

提速:
http://bj.wokuan.cn/web/improvespeed.php?ContractNo=宽带帐号&up=09&old=07&round=29

恢复: http://bj.wokuan.cn/web/lowerspeed.php?ContractNo=宽带帐号&round=85

上面up old表示提升和本来的两种宽带类型
09是100M
07是10M
round是随机数

guoxiao

#!/bin/sh

# Some things taken from here
# https://github.com/mathiasbynens/dotfiles/blob/master/.osx

# Set the colours you can use
black='\033[0;30m'
white='\033[0;37m'
red='\033[0;31m'
green='\033[0;32m'

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import hashlib
import array

a = array.array('I', [
	0x6165300e,0x87a79a55,0xf7c60bd0,0x34febd0b,
	0x6503cf04,0x854f709e,0xfb0fc034,0x874c9c65,
	0x2f94cc40,0x15a12deb,0x5c15f4a3,0x490786bb,
	0x6d658673,0xa4341f7d,0x8fd75920,0xefd18d5a
	])