steakunderscore

Install some needed libraries

sudo aptitude install libmpc-dev

Make the temp directory to build in

mkdir toolchain
cd toolchain

Get the required sources

cballou

<?php
function get_ip_address() {
    $ip_keys = array('HTTP_CLIENT_IP', 'HTTP_X_FORWARDED_FOR', 'HTTP_X_FORWARDED', 'HTTP_X_CLUSTER_CLIENT_IP', 'HTTP_FORWARDED_FOR', 'HTTP_FORWARDED', 'REMOTE_ADDR');
    foreach ($ip_keys as $key) {
        if (array_key_exists($key, $_SERVER) === true) {
            foreach (explode(',', $_SERVER[$key]) as $ip) {
                // trim for safety measures
                $ip = trim($ip);
                // attempt to validate IP
                if (validate_ip($ip)) {

jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

hellerbarde

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

magnetikonline

Pretty print bookmarklet helper for Gist pages

Create a new bookmark somewhere handy in your browser with the following URL:

javascript:var el=document.createElement('style');el.media='print';el.innerHTML='#header,.pagehead.repohead,.gist-description.container,.file-box .meta,#comments,.js-comment-form,#footer{display:none;}.file-box{border:0!important;}';document.getElementsByTagName('head')[0].appendChild(el);alert('Please consider the environment before printing :)');

• Navigate to your Gist of choice
• Hit the bookmarklet

barryvdh

<?php
/**
 * A helper file for Laravel 5, to provide autocomplete information to your IDE
 * Generated for Laravel 5.5.13 on 2017-09-28.
 *
 * @author Barry vd. Heuvel <barryvdh@gmail.com>
 * @see https://github.com/barryvdh/laravel-ide-helper
 */
namespace  {
    exit("This file should not be included, only analyzed by your IDE");

velicast

// C++ includes used for precompiling -*- C++ -*-

// Copyright (C) 2003-2013 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library 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, or (at your option)
// any later version.

katowulf

// assumes you add a timestamp field to each record (see Firebase.ServerValue.TIMESTAMP)
// pros: fast and done server-side (less bandwidth, faster response), simple
// cons: a few bytes on each record for the timestamp
var ref = new Firebase(...);
ref.orderByChild('timestamp').startAt(Date.now()).on('child_added', function(snapshot) {
  console.log('new record', snap.key());
});

mycodeschool

/*
  Infix to postfix conversion in C++ 
  Input Postfix expression must be in a desired format. 
  Operands and operator, both must be single character.
  Only '+'  ,  '-'  , '*', '/' and '$' (for exponentiation)  operators are expected. 
*/
#include<iostream>
#include<stack>
#include<string>

amoshyc

/*
這本來的某考上大學的非資訊社同學問我的，剛好有空就把它整理出來
以下是一些我臨時想到的，歡迎補充。
這些對論壇中大部人已經是基礎了吧~不過我想對下一屆學弟還是有用的。
我自己是習慣用 cin 和 string 來做 input，雖然有些題目真的需要用 scanf 速度上才過得了…
但 scanf 跟我不是很熟，怕誤導學弟，就等其它人來寫了。
以下都以例子來說明。
註：這些寫法不是唯一的，存在著許多不同寫法可以有同樣效果。

目錄：