Sangheon Han sangheonhan

Easy pthreads Pools

The final solution !!

Since the first version of pthreads, PHP has had the ability to initialize Worker threads for users. Onto those Worker threads are stacked objects of class Stackable for execution concurrently.

The objects stacked onto workers do not have their reference counts changed, pthreads forces the user to maintain the reference counts in userland, for the extremely good reason that this enables the programmer to keep control of memory usage; and so, execute indefinitely.

This is the cause of much heartache for newcomers to pthreads; if you do not maintain references properly you will, definitely, experience segmentation faults.

TODO: Add price informations
TODO: Add App Store Addresses

System Tools

###Chrome

One browser for your computer, phone and tablet

Disclaimer: This is an unofficial post by a random person from the community. I am not an official representative of io.js. Want to ask a question? open an issue on the node-forward discussions repo

io.js - what you need to know

io is a fork of node v0.12 (the next stable version of node.js, currently unreleased)
io.js will be totally compatible with node.js
the people who created io.js are node core contributors who have different ideas on how to run the project
it is not a zero-sum game. many core contributors will help maintain both node.js and io.js

Setting up iOS Universal Links

Sometimes you may want to undo a whole commit with all changes. Instead of going through all the changes manually, you can simply tell git to revert a commit, which does not even have to be the last one. Reverting a commit means to create a new commit that undoes all changes that were made in the bad commit. Just like above, the bad commit remains there, but it no longer affects the the current master and any future commits on top of it.

git revert {commit_id}

About History Rewriting

Delete the last commit

Deleting the last commit is the easiest case. Let's say we have a remote origin with branch master that currently points to commit dd61ab32. We want to remove the top commit. Translated to git terminology, we want to force the master branch of the origin remote repository to the parent of dd61ab32:

한글과 유니코드

유니코드에서 한글을 어떻게 다루는지를 정리하였다.

유니코드

유니코드(Unicode)는 전 세계의 모든 문자를 컴퓨터에서 일관되게 표현하고 다룰 수 있도록 설계된 산업 표준 (위키 백과)
단순히 문자마다 번호를 붙임
계속 업데이트되며 현재는 Unicode Version 9.0.0 이 최신이다.

UTF

유니코드를 실제 파일 등에 어떻게 기록할 것인지를 표준화한 것이다.

	1. Install wget gcc and wget
	yum install gcc wget

	2. Create a folder setup and wget the source
	mkdir -p /package
	chmod 1755 /package
	cd /package
	wget http://cr.yp.to/daemontools/daemontools-0.76.tar.gz
	tar -xzvf daemontools-0.76.tar.gz
	rm daemontools-0.76.tar.gz

	<?php

	/**
	* I was having trouble with socket connections timing out reliably. Sometimes,
	* my timeout would be reached. Other times, the connect would fail after three
	* to six seconds. I finally figured out it had to do with trying to connect to
	* a routable, non-localhost address. It seems the socket_connect call would
	* not fail immediately for those connections. This function is what I finally
	* ended up with that reliably connects to a working server, fails quickly for
	* a server that has an address/port that is not reachable and will reach the

	#!/bin/bash
	#
	# Highligh Nginx config file in Vim

	# Download syntax highlight
	mkdir -p ~/.vim/syntax/
	wget http://www.vim.org/scripts/download_script.php?src_id=19394 -O ~/.vim/syntax/nginx.vim

	# Set location of Nginx config file
	cat > ~/.vim/filetype.vim <<EOF

	""" Trains an agent with (stochastic) Policy Gradients on Pong. Uses OpenAI Gym. """
	import numpy as np
	import cPickle as pickle
	import gym

	# hyperparameters
	H = 200 # number of hidden layer neurons
	batch_size = 10 # every how many episodes to do a param update?
	learning_rate = 1e-4
	gamma = 0.99 # discount factor for reward