Wei Shen shenwei356

Original link: http://www.concentric.net/~Ttwang/tech/inthash.htm
Taken from: http://web.archive.org/web/20071223173210/http://www.concentric.net/~Ttwang/tech/inthash.htm
Reformatted using pandoc

Integer Hash Function

Thomas Wang, Jan 1997

last update Mar 2007

SAM and BAM filtering one-liners

@author: David Fredman, [email protected] (sans poly-A tail)
@dependencies: http://sourceforge.net/projects/bamtools/ and http://samtools.sourceforge.net/

Please extend with additional/faster/better solutions via a pull request!

BWA mapping (using piping for minimal disk I/O)

Configure Git to use a proxy

In Brief

You may need to configure a proxy server if you're having trouble cloning or fetching from a remote repository or getting an error like unable to access '...' Couldn't resolve host '...'.

Consider something like:

	/*
	For any 1<k<=64, let mask=(1<<k)-1. hash_64() is a bijection on [0,1<<k), which means
	hash_64(x, mask)==hash_64(y, mask) if and only if x==y. hash_64i() is the inversion of
	hash_64(): hash_64i(hash_64(x, mask), mask) == hash_64(hash_64i(x, mask), mask) == x.
	*/

	// Thomas Wang's integer hash functions. See <https://gist.github.com/lh3/59882d6b96166dfc3d8d> for a snapshot.
	uint64_t hash_64(uint64_t key, uint64_t mask)
	{
	key = (~key + (key << 21)) & mask; // key = (key << 21) - key - 1;

	# Hello, and welcome to makefile basics.
	#
	# You will learn why `make` is so great, and why, despite its "weird" syntax,
	# it is actually a highly expressive, efficient, and powerful way to build
	# programs.
	#
	# Once you're done here, go to
	# http://www.gnu.org/software/make/manual/make.html
	# to learn SOOOO much more.

	<p>
	My programming language of preference is python for the simple reason that I feel I write better code faster with it then I do with other languages. However also has a lot of nice tricks and idioms to do things well. And partly as a reminder to myself to use them, and partly because I thought this might be of general interest I have put together this collection of some of my favourite idioms. I am also putting this on <a href="https://gist.github.com/codefisher/9d7993ddbf404c505128">gist.github.com</a> so that anyone that wants to contribute there own things can, and I will try and keep this post up to date.
	</p>

	<h2>enumerate</h2>

	<p>
	A fairly common thing to do is loop over a list while also keeping track of what index we are up to. Now we could use a <code>count</code> variable, but python gives us a nicer syntax for this with the <code>enumerate()</code> function.

	<script src="https://gist.github.com/codefisher/9d7993ddbf404c505128.js?file=enumerate.py"></script>

	package main

	import (
	"bufio"
	"encoding/csv"
	"encoding/json"
	"fmt"
	"io"
	"os"
	"path/filepath"

	ZigZag-Encoding
	---------------

	Maps negative values to positive values while going back and
	forth (0 = 0, -1 = 1, 1 = 2, -2 = 3, 2 = 4, -3 = 5, 3 = 6 ...)

	(i >> bitlength-1) ^ (i << 1)

	with "i" being the number to be encoded, "^" being
	XOR-operation and ">>" would be arithemtic shifting-operation

	<!DOCTYPE html>
	<html>
	<head>
	<meta http-equiv="content-type" content="text/html; charset=UTF-8">
	<title>Todo Vue.js Example</title>
	<link rel="stylesheet"
	type="text/css"
	href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
	<script src="https://cdn.jsdelivr.net/vue/latest/vue.js"></script>
	<style type="text/css">

	# ====================
	# Project Makefile
	# ====================
	# User Configuration {{{1
	# ====================

	# Major targets {{{2
	.PHONY: figs res
	figs:
	# [Partially redacted]