danielestevez

1) Create a branch with the tag
	git branch {tagname}-branch {tagname}
	git checkout {tagname}-branch

2) Include the fix manually if it's just a change .... 
	git add .
	git ci -m "Fix included"
    or cherry-pick the commit, whatever is easier
	git cherry-pick  {num_commit}
	

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

MohamedAlaa

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

simianhacker

-- Function: json_path(json, text)

-- DROP FUNCTION json_path(json, text);

CREATE OR REPLACE FUNCTION json_path(data json, path text)
  RETURNS text AS
$BODY$
/* JSONPath 0.8.0 - XPath for JSON
 *
 * Copyright (c) 2007 Stefan Goessner (goessner.net)

lelandbatey

Description

This simple script will take a picture of a whiteboard and use parts of the ImageMagick library with sane defaults to clean it up tremendously.

The script is here:

#!/bin/bash
convert "$1" -morphology Convolve DoG:15,100,0 -negate -normalize -blur 0x1 -channel RBG -level 60%,91%,0.1 "$2"

Results

elithrar

A quick "how to" on what you need to do to both setup AND recover a single-server PostgreSQL database using WAL-E

• WAL-E: https://github.com/wal-e/wal-e
• Assuming Ubuntu 12.04 LTS ("Precise")
• We'll be using S3. Make sure you have an IAM in a group with GetObject, ListBucket and PutObject on the bucket you want to use (and that it's not public).

Setup:

1. These packages:

nickjacob

[Unit]
Description=Demonstrate Bash

[Service]
ExecStartPre=/usr/bin/bash -c "/usr/bin/systemctl set-environment MYVAR=$(( 2 + 2 ))"
ExecStart=/usr/bin/echo "2 + 2 = ${MYVAR}"

YanivHaramati

var EnglishDictionary = function (words) {
    var self = {};
    var letterHash = initLeterHash();
    
    // this is efficient enough to get 1mil primes fast.
    function getPrimes(num) {
        var primes = [2, 3];
        for (var n = 5; primes.length < num; n += 2) {
            var sqrt = Math.sqrt(n);
            var isPrime = true;

eyecatchup

Update: For those interested, here's the version for updating from Android 5.1.0 (LMY47D/LMY47I) to Android 5.1.1 (LMY48B):
https://gist.github.com/eyecatchup/dab5cf7977008e504213

---

  UPDATE `NEXUS 5` 
     SET `VERSION`='5.0.1', `BUILD`='LRX22C', `RECOVERY`='CUSTOM', `ROOTED`=1 
   WHERE `VERSION`='5.0' && `BUILD`='LRX21O' && `RECOVERY`='CUSTOM' && `ROOTED`=1 
         && `WANNA_KEEP_USERDATA`=1;

hfreire

# Install QEMU OSX port with ARM support
sudo port install qemu +target_arm
export QEMU=$(which qemu-system-arm)

# Dowload kernel and export location
curl -OL \
https://github.com/dhruvvyas90/qemu-rpi-kernel/blob/master/kernel-qemu-4.1.7-jessie
export RPI_KERNEL=./kernel-qemu-4.1.7-jessie

# Download filesystem and export location