joyeecheung’s gists

joyeecheung / download.sh

Last active November 14, 2017 05:52

Quickly download a repo at a ref without git history, useful if you need multiple tag/commit/branch of it

	REF=8680bb9
	# The following work as well
	# REF=master
	# REF=V8.x-staging
	# REF=V8.9.1

	wget https://github.com/nodejs/node/archive/$REF.tar.gz
	mkdir -p $REF
	tar zxvf $REF.tar.gz -C $REF --strip-components=1
	cd $REF

joyeecheung / index.html

Last active April 13, 2017 06:44

egg benchmark plots

	<!DOCTYPE html>
	<style>

	.axis .domain {
	display: none;
	}

	</style>
	<svg width="1200" height="500"></svg>
	<script src="https://d3js.org/d3.v4.min.js"></script>

joyeecheung / chromium-issue-tracker-user-style.css

Last active February 18, 2017 18:01

User style for chromium issue tracker

	.issue_text {
	font-family: "CamingoCode", "Fira Mono", menlo, monaco, consolas, monospace;
	margin-left: 10px;
	}
	a:link,
	a:focus {
	color: #1281c9;
	}
	a:visited {
	color: #673ab7;

joyeecheung / reverse.js

Created January 7, 2015 04:49

Reverse a sequence(array or string) recursively.

	function reverse(seq) {
	if (seq.length > 1)
	return seq.slice(-1).concat(reverse(seq.slice(0, -1)));
	else
	return seq;
	}

joyeecheung / vla-forward.c

Created November 27, 2014 18:17

Variable length array as function parameter, casted before passing, using GNU C forward parameter declaration

	// compile me with `gcc -std=c99` or `gcc -std=gnu99`

	#include <stdio.h>

	int sum(int n_col; int arr[][n_col], int n_row, int n_col) {
	int i, j, total = 0;
	for (i = 0; i < n_row; ++i) {
	for (j = 0; j < n_col; ++j) {
	total += arr[i][j];
	}

joyeecheung / reverseChild.js

Last active August 29, 2015 14:07

Reverse the children of an DOM Element while preserving their CSS styles and event listeners. Due to their incorrect implementation of `children`, this might no work in IE8-.

	function reverseChild(pare) {
	if (!pare.children \|\| pare.children.length < 2) return;

	var emptyParent = document.createElement(pare.nodeName);
	var detachedParent = pare.parentNode.replaceChild(emptyParent, pare);
	var emptyLeft = document.createElement(detachedParent.children[0].nodeName);
	var emptyRight = document.createElement(detachedParent.children[0].nodeName);

	for (var i = 0, len = detachedParent.children.length; i < Math.floor(len/2); i++) {
	var left = detachedParent.replaceChild(emptyLeft, detachedParent.children[i]);

joyeecheung / inputString.c

Created October 14, 2014 06:31

read a string unitl a newline character is entered

	#include <stdio.h>
	int main(int argc, char *argv[]) {
	char msg[100];
	char in = "%99[^\n]%c";
	scanf(in, msg);
	printf("%s\n", msg);
	return 0;
	}

joyeecheung / volatility.py

Created September 30, 2014 11:17

Python script for jade's quant case

	import math

	data = list()
	f = open("data")

	for line in f:
	data.append(float(line))

	T = len(data) - 1

joyeecheung / readUntil.c

Last active August 29, 2015 14:06

Read until the character `?`

	#include <stdio.h>
	#include <string.h>

	int main(void) {
	char line[30000];
	char str[30000];

	FILE * pFile = fopen ("myfile.txt" , "r");

	/* Avoid buffer overflow by using fgets() */

joyeecheung / draggable.js

Created September 10, 2014 10:07

A simple drag and drop plugin, supporting IE8+, Firefox, Chrome

	;(function(window, undefined) {
	/**
	* some utitlity to help handling compatibility issues
	*/
	var util = {
	/**
	* Cross-browser event handler support.
	* @param {Object} elem the event target
	* @param {Object} type event object
	* @param {Function} fn event handler

Joyee Cheung joyeecheung