Yi Lu eccstartup

#Haskell基础

语法、语义
常用函数实现
函数参考
语法拾遗
Codeforces
99 Problem
Euler
Queue

Open Computing Language (OpenCL) is a language and framework for writing computationally intensive kernels that run accross heterogenious platforms, including GPUs, CPUs, and perhaps other more esoteric devices.

Intel provides an OpenCL implementation for Intel CPUs, but there's not a lot of instructions on how to get it set up. Here's what I did.

Installing Intel CPU OpenCL on Ubuntu (12.04)

Download the Intel® SDK for OpenCL* Applications XE 2013 from the Intel website, here http://software.intel.com/en-us/vcsource/tools/opencl-sdk-xe. The download is a tarball -- the one I got is called intel_sdk_for_ocl_applications_2013_xe_sdk_3.0.67279_x64.tgz
Unpack the tarball and cd into the new directory

Oops! I accidentally deleted a local git branch, and I haven't pushed it to a remote server yet. The branch has several important commits, and it hasn't been merged with any other branches yet. How do I find the missing branch?

1. Create a list of all dangling or unreachable commits.

$ git fsck --full --no-reflogs --unreachable --lost-found
unreachable tree 4a407b1b09e0d8a16be70aa1547332432a698e18
unreachable tree 5040d8cf08c78119e66b9a3f8c4b61a240229259
unreachable tree 60c0ce61b040f5e604850f747f525e88043dae12
unreachable tree f080522d06b9853a2f18eeeb898724da4af7aed9

Most active GitHub users (git.io/top)

The count of contributions (summary of Pull Requests, opened issues and commits) to public repos at GitHub.com from Sun, 16 Dec 2012 07:15:00 GMT till Mon, 16 Dec 2013 07:15:00 GMT.

Only first 1000 GitHub users according to the count of followers are taken. This is because of limitations of GitHub search. Sorting algo in pseudocode:

githubUsers
 .filter((user) -&gt; user.followers &gt; 228)

	/***************
	* pointers.js *
	***************
	*
	* You! How are you still alive?
	*
	* Well, no matter. Good luck getting through this
	* maze of rooms - you'll never see me or the Algorithm again!
	*/

	/*
	* robotMaze.js
	*
	* The blue key is inside a labyrinth, and extracting
	* it will not be easy.
	*
	* It's a good thing that you're a AI expert, or
	* we would have to leave empty-handed.
	*/

	import sys
	import re
	class mysql_to_mssql_converter:
	"""
	Python script for converting MySQL dump into MSSQL compatible scripts
	Based on my project, I know the following points need to be converted
	1. ` need to be removed
	2. ENGINE=InnoDB etc need to be removed
	3. int(size), (size) is not supported for int, need to be removed.
	4. AUTO_INCREMENT need to be changed to IDENTITY(1,1)

	#!/bin/bash

	echo "Cleaning up..."
	#rm 00-index.tar.gz
	mkdir -p package
	echo "Downloading index..."
	wget -c http://hackage.haskell.org/packages/archive/00-index.tar.gz
	for splitpk in `tar tf 00-index.tar.gz \| cut -d/ -f 1,2`; do
	pk=`echo $splitpk \| sed 's\|/\|-\|'`
	name=$pk.tar.gz

	Fibonacci sequence
	> fibonacciList = 1:1:zipWith (+) (tail fibonacciList) fibonacciList

	Prime number sequence
	> primeList = 2 : let oddList = [3,5..] in filter (\n-> and $ map (\x-> rem n x /= 0) $ takeWhile (\x -> x <= floor (fromIntegral n**(0.5))) primeList) oddList

	Binomial coefficients for each order, called Pascal's Triangle
	> pascalTriangleList = let fetch2 = (\(m,list) -> let ls = 1:map (\n->sum $ (take 2.drop n) list) [0..floor $ fromIntegral (m-1)/2] in ls ++ (if odd m then drop 1 else id) (reverse ls)) in [1]:[1,1]: (map fetch2 $ zip [1..] $ tail pascalTriangleList)

Yi Lu eccstartup

Installing Intel CPU OpenCL on Ubuntu (12.04)

1. Create a list of all dangling or unreachable commits.

Most active GitHub users (git.io/top)

Haskell Resources

Introductory