Yi Xianfu Yixf-Self

Since this is on Hacker News and reddit...

No, I don't distribute my résumé like this. A friend of mine made a joke about me being the kind of person who would do this, so I did (the link on that page was added later). My actual résumé is written in BSD mandoc.
I apologize for the use of _t in my types. I spend a lot of time at a level where I can do that; "reserved for system libraries? I am the system libraries".
Since people kept complaining, I've fixed the assignments of string literals to non-const char *s.
My use of type * name, however, is entirely intentional.
If you're using an older compiler, you might have trouble with the anonymous unions and the designated initializers - I think gcc 4.4 requires some extra braces to get them working together. Anything reasonably recent should work fine. Clang and gcc (newer than 4.4, at

How to run Perl in an interactive shell

An interactive shell is useful for quickly trying out different commands. While Ruby, Python, and Clojure come with interactive shells, Perl does not. However, it is easy to create one using this one-liner on Unix systems:

perl -e 'do{print("perl> ");$_x=<>;chomp $_x;print(eval($_x)."\n")}while($_x ne "q")'

tmux Reference

Creating Sessions

Command	Description
`tmux new-session`	Create new session without a name. (Alt: `tmux` or `tmux new`)
`tmux new -s development`	Creates new session called "development."
`tmux new -s development -n editor`	Create new session called "development" and a first window called "editor."
`tmux attach -t development`	Attaches to a session called "development."

环境 (Environment)

版本：Ubuntu 14.04 LTS 默认语言：English(United States)

安装 (Setup)

Debian 和 Ubuntu 下对中文支持比较好的字体有： fonts-droid、ttf-wqy-zenhei 和 ttf-wqy-microhei 等，除了文泉驿系列字体外，比较流行的免费中文字体还有文鼎提供的楷体和上海宋，包名分别是： fonts-arphic-ukai 和 fonts-arphic-uming。

	# 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.

	itan <- function(x, keys=NULL, digits=3, no.resp=4) {
	# x is an n subjects by k items matrix
	# keys is a vector with the correct keys (A, B, C, D)
	stopifnot(ncol(x)>1)
	if (is.null(keys)) keys <- rep("A", ncol(x))
	require(ltm)
	raw.resp <- matrix(nr=ncol(x), nc=no.resp)
	colnames(raw.resp) <- LETTERS[1:no.resp]
	for (i in 1:ncol(x)) {
	tmp <- table(x[,i])

	========================================== ==========================================
	TMUX COMMAND WINDOW (TAB)
	========================================== ==========================================

	List tmux ls List ^b w
	New -s <session> Create ^b c
	Attach att -t <session> Rename ^b , <name>
	Rename rename-session -t <old> <new> Last ^b l (lower-L)
	Kill kill-session -t <session> Close ^b &

	function active-window-id {
	echo `xprop -root \| awk '/_NET_ACTIVE_WINDOW\(WINDOW\)/{print $NF}'`
	}

	# end and compare timer, notify-send if needed
	function notifyosd-precmd() {
	if [ ! -z "$cmd" ]; then
	cmd_end=`date +%s`
	((cmd_time=$cmd_end - $cmd_start))
	fi

	# commands to ignore
	cmdignore=(htop tmux top vim)

	# end and compare timer, notify-send if needed
	function notifyosd-precmd() {
	retval=$?
	if [[ ${cmdignore[(r)$cmd_basename]} == $cmd_basename ]]; then
	return
	else
	if [ ! -z "$cmd" ]; then

	Mode <- function(x) {
	ux <- unique(x)
	ux[which.max(tabulate(match(x, ux)))]
	}