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@OmerMor
OmerMor / FastArraySerializer.cs
Last active November 26, 2021 05:33
A hack to temporarily view a float array as a byte array and vice versa, in O(1) - without mem copy. License: FreeBSD
/*
Copyright (c) 2013, Omer Mor
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
@jaseemabid
jaseemabid / git tutorials.md
Last active May 9, 2025 01:01 — forked from netroy/git tutorials.md
Awesome git tutorials I am finding here and there
@jjeffery
jjeffery / ComWithoutRegistering.cs
Created January 6, 2012 02:25
COM without registering
using System;
using System.ComponentModel;
using System.Runtime.InteropServices;
namespace ComWithoutRegisteringExample
{
internal static class ComHelper
{
private delegate int DllGetClassObject(ref Guid clsid, ref Guid iid, [Out, MarshalAs(UnmanagedType.Interface)] out IClassFactory classFactory);
// Includes functions for exporting active sheet or all sheets as JSON object (also Python object syntax compatible).
// Tweak the makePrettyJSON_ function to customize what kind of JSON to export.
var FORMAT_ONELINE = 'One-line';
var FORMAT_MULTILINE = 'Multi-line';
var FORMAT_PRETTY = 'Pretty';
var LANGUAGE_JS = 'JavaScript';
var LANGUAGE_PYTHON = 'Python';
@ovatsus
ovatsus / Setup.fsx
Created March 17, 2012 17:07
Script to setup F# Interactive session, loading everything in the current solution
#r "System.Xml.Linq"
open System
open System.IO
open System.Xml.Linq
let script = seq {
//TODO: this currently loads fsproj's in alphabeticall order, we should instead
//build the dependencies graph of the fsproj's and load them in topological sort order
@jexchan
jexchan / multiple_ssh_setting.md
Created April 10, 2012 15:00
Multiple SSH keys for different github accounts

Multiple SSH Keys settings for different github account

create different public key

create different ssh key according the article Mac Set-Up Git

$ ssh-keygen -t rsa -C "[email protected]"
@jboner
jboner / latency.txt
Last active June 2, 2025 03:01
Latency Numbers Every Programmer Should Know
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
@caniszczyk
caniszczyk / clone-all-twitter-github-repos.sh
Created October 9, 2012 04:25
Clone all repos from a GitHub organization
curl -s https://api.github.com/orgs/twitter/repos?per_page=200 | ruby -rubygems -e 'require "json"; JSON.load(STDIN.read).each { |repo| %x[git clone #{repo["ssh_url"]} ]}'
@stephenhardy
stephenhardy / git-clearHistory
Created April 26, 2013 22:14
Steps to clear out the history of a git/github repository
-- Remove the history from
rm -rf .git
-- recreate the repos from the current content only
git init
git add .
git commit -m "Initial commit"
-- push to the github remote repos ensuring you overwrite history
git remote add origin [email protected]:<YOUR ACCOUNT>/<YOUR REPOS>.git
@martintrojer
martintrojer / exprPattern.scala
Last active July 2, 2021 06:23
expression problem
object exprPattern extends App {
sealed trait Expr
case class Add(e1: Expr, e2: Expr) extends Expr
case class Sub(e1: Expr, e2: Expr) extends Expr
case class Num(n: Int) extends Expr
def value(e: Expr): Int = e match {
case Add(e1, e2) => value(e1) + value(e2)
case Sub(e1, e2) => value(e1) - value(e2)
case Num(n) => n