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#!/usr/bin/awk -f
#
# call_graph.awk
#
# Usage:
#   ./call_graph.awk my_program.lua | dot -Tpng > call_graph.png
#
# This is a script that generates a visual call graph for a Lua file.
# This script only shows calls made to functions defined within the
# input Lua file; that is, it excludes calls such as standard library

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git log --graph --pretty=format:'%Cred%h%Creset -%C(yellow)%d%Creset %s %Cgreen(%cr) %C(bold blue)<%an>%Creset' --abbrev-commit

git config --global alias.lol "log --graph --pretty=format:'%Cred%h%Creset -%C(yellow)%d%Creset %s %Cgreen(%cr) %C(bold blue)<%an>%Creset' --abbrev-commit"

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local function clone_function(fn)
  local dumped = string.dump(fn)
  local cloned = loadstring(dumped)
  local i = 1
  while true do
    local name = debug.getupvalue(fn, i)
    if not name then
      break
    end
    debug.upvaluejoin(cloned, i, fn, i)

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stop all containers:
docker kill $(docker ps -q)

remove all containers
docker rm $(docker ps -a -q)

remove all docker images
docker rmi $(docker images -q)

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// Copied from
// http://stackoverflow.com/questions/7956167/how-can-i-quickly-read-bytes-from-a-memory-mapped-file-in-net

public static MemoryMapppedIOExtensions
{
    public unsafe byte[] ReadBytesFast(this MemoryMappedViewAccessor view, int offset, int num)
    {
        try 
        {
            byte[] arr = new byte[num];

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1. Check if a number is even or odd 
An integer number N is even if its least significant bit is 0 otherwise it is odd

N AND 1

2. Divide by 2
Given an integer number N you can divide it by 2 by shifting all the bits to the right with one position.

N >> 1 

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Contents

• Articles
• Algorithms
• Coding
• Guides
• Language-specific
  • JavaScript
• Python

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progrium/bashstyle

Bash is the JavaScript of systems programming. Although in some cases it's better to use a systems language like C or Go, Bash is an ideal systems language for smaller POSIX-oriented or command line tasks. Here's three quick reasons why:

• It's everywhere. Like JavaScript for the web, Bash is already there ready for systems programming.
• It's neutral. Unlike Ruby, Python, JavaScript, or PHP, Bash offends equally across all communities. ;)
• It's made to be glue. Write complex parts in C or Go (or whatever!), and glue them together with Bash.

This document is how I write Bash and how I'd like collaborators to write Bash with me in my open source projects. It's based on a lot of experience and time collecting best practices. Most of them come from these two articles, but here integrated, slightly modified, and focusing on the most bang for buck items. Plus some ne

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--===================================================
--=  Niklas Frykholm 
-- basically if user tries to create global variable
-- the system will not let them!!
-- call GLOBAL_lock(_G)
--
--===================================================
function GLOBAL_lock(t)
  local mt = getmetatable(t) or {}
  mt.__newindex = lock_new_index

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//Find the top X frequent numbers in a stream 
// http://www.cs.berkeley.edu/~satishr/cs270/sp11/rough-notes/Streaming-two.pdf

// Returns the top numbers k and their frequencies in the set
// Complexity:
//    space = O(k)
//    time = O(N)
map<int, int> getFreq(k, Set) {
    A = map<int, int>
    for (k : getTop(k, Set) {