leo.lu luqizheng

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luqizheng / DHT11.cs

Created June 19, 2018 04:45 — forked from Injac/DHT11.cs

DHT11 Sensor driver for Windows 10 IoT Core - C#

	//An exact copy of the adafruit DTH-11 driver in C#

	//Example usage:

	//var gpio = GpioController.GetDefault();


	//var dataPin = gpio.OpenPin(5);

luqizheng / latency.txt

Created June 6, 2016 10:02 — forked from jboner/latency.txt

Latency Numbers Every Programmer Should Know

	Latency Comparison Numbers
	--------------------------
	L1 cache reference 0.5 ns
	Branch mispredict 5 ns
	L2 cache reference 7 ns 14x L1 cache
	Mutex lock/unlock 25 ns
	Main memory reference 100 ns 20x L2 cache, 200x L1 cache
	Compress 1K bytes with Zippy 3,000 ns 3 us
	Send 1K bytes over 1 Gbps network 10,000 ns 10 us
	Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD

luqizheng / tab离开显示.js

Last active April 7, 2016 09:43

当焦点离开浏览器tab的时候，就产生一个事件


	var hiddenProperty = 'hidden' in document ? 'hidden' :
	'webkitHidden' in document ? 'webkitHidden' :
	'mozHidden' in document ? 'mozHidden' :
	null;

	var visibilityChangeEvent = hiddenProperty.replace(/hidden/i, 'visibilitychange');
	var onVisibilityChange = function(){
	if (!document[hiddenProperty]) {
	document.title = 'test';

luqizheng / guid

Created December 31, 2015 00:40

create guid by js

	//http://stackoverflow.com/questions/105034/create-guid-uuid-in-javascript
	function guid() {
	function s4() {
	return Math.floor((1 + Math.random()) * 0x10000)
	.toString(16)
	.substring(1);
	}
	return s4() + s4() + '-' + s4() + '-' + s4() + '-' +
	s4() + '-' + s4() + s4() + s4();
	}

luqizheng / autostart.bat

Last active December 10, 2015 08:28

程序一旦关闭，会在5秒内自动重启

	@echo on

	:loop
	echo Start checking

	rem ：请把下面的 check.bat* 更换你想要的windowtitle，不支持模糊查询，只能在后面*来区别

	for /F "tokens=2 delims=," %%a in ('tasklist /fo csv /v /fi "windowTitle eq loopCheck.bat*"') do (
	echo Infinity is exist, wait 5 sechond and re-check.
	ping -n 5 127.1>nul

luqizheng / 0_reuse_code.js

Created December 6, 2015 07:04

Here are some things you can do with Gists in GistBox.

	// Use Gists to store code you would like to remember later on
	console.log(window); // log the "window" object to the console