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Wenchao Wang
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An IT techie
An IT techie

9 followers
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微信小程序开发的技术原理
写在前面 微信小程序使用了前端技术栈 JavaScript/WXML/WXSS。但和常规的前端开发又有一些区别: JavaScript: 微信小程序的 JavaScript 运行环境即不是 Browser 也不是 Node.js。它运行在微信 App 的上下文中,不能操作 Browser context 下的 DOM,也不能通过 Node.js 相关接口访问操作系统 API。所以,严格意义来讲,微信小程序并不是 Html5,虽然开发过程和用到的技术栈和 Html5 是相通的。 WXML: 作为微信小程序的展示...

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Linux 进程状态浅析
众所周知,现在的分时操作系统能够在一个CPU上运行多个程序,让这些程序表面上看起来是在同时运行的。linux就是这样的一个操作系统。 在linux系统中,每个被运行的程序实例对应一个或多个进程。linux内核需要对这些进程进行管理,以使它们在系统中“同时”运行。linux内核对进程的这种管理分两个方面:进程状态管理,和进程调度。本文主要介绍进程状态管理,进程调度见《linux进程调度浅析》。 进程状态 在linux下,通过ps命令我们能够查看到系统中存在的进程,以及它们的状态: R(TASK_RUNNING)...

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WebSockets
WebSockets A WebSocket is a standard protocol for two-way data transfer between a client and server. The WebSockets protocol does not run over HTTP, instead it is a separate implementation on top of TCP . Why use WebSockets? A WebSocket connection allows fu...

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A decentralized vehicle monitoring and communication pattern design
Recently, V2X or telematics becomes a very hot topic. It's also a very interesting point to dig into the topic, how to design a V2X communication pattern. People say that, what is so called telematics is embedded your iPhone in your car. So the this inspire...

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mesos installation hint on Ubuntu 14.04 LTS
Today I spent 2 hours to install mesos on my vmware machine. I figured out a small error in the get started guide. I hope this can help someone later on:-) In the get started guide, it says that you should download and unzip by using following command $ wge...

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telematics experience in Euro
Something very interesting to drive a car in Euro highway (x, Euro; x' CN): 1. in Euro esp in Germany, some very restricted laws in place, so the driver are driving in a more standard way, and also the people who are crossing the road, they are strictly fol...

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chinese consumer telematics market
今天突然想起来点东西,最近在中国有很多车联网公司雨后春笋般的在中国成立,国家也把车联网当成了一个发展的一个战略方向放到了一个很高的高度,也加大了投资力度。但是今天突然想到了一个问题,车辆网,telematics如果基于现在的汽车的模型,那么汽车现在作为一个重要信息的载体,中国是否已经准备好了? 随着中国经济的飞速发张,中国最近出现了很多的很具规模的汽车制造公司(奇瑞,长城,BYD等等)但是要是谈论到车联网,根据现在一个比较流行的模式,对于终端的消费市场其实就是基于OBD的数据采集器,然后上传到后台的服务器存储...

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Finally BMW open sourcing its NGTP framework
http://ngtp.org/?page_id=42

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CUE, telematics, MB connected, connected car

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MB connected and CUE`
MB connected As telematics solution provided by Benz, MB connected is very similar with BMW ConnectedDrive, both provides I/I/E call solutions, RTTI etc. But unlike BMW CD, the service activation mode is more like onstar's, the system can place call even wi...
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