lidar programming

Java-based network programming and java Network Programming IP address The IP address is a network-layer communication address expressed by 32-bit or 128-bit unsigned numbers. It is a low-level protocol. Both TCP and UDP are built on it. In Java, InetAddress is used to represent the IP address. It has two subclasses: Inet4Address and Inet6Address, which represent IPV4 and IPV6 respectively. The getByName ()

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[Reading Notes] C # advanced programming Chapter 1 asynchronous programming, (1) Importance of asynchronous programming In asynchronous programming, method calls are run in the background (usually with the help of a thread or task) and do not block the call thread. There are three different asynchronous

Linux C ++ multi-thread programming and linux multi-thread programming1. Introduction 　　Thread)The technology was proposed as early as 1960s, but the real application of multithreading to the operating system was in the middle of 1980s, and solaris was the leader in this field. Traditional Unix also supports the thread concept, but inProcess)Only one thread is allowed, so multithreading means multiple processes. Now, multithreading technology has been

Deep understanding of python multi-process programming and deep understanding of python Programming 1. python multi-process programming background The biggest benefit of multi-process in python is to make full use of the resources of multi-core cpu. Unlike the multi-thread in python, it is limited by GIL and can only be allocated to the cpu. in python multi-proce

The mobile phone itself is used as a mobile phone terminal, so its computing power, storage capacity is limited. Its main advantage is easy to carry, can be opened at any time, and the phone is always in the connected state. Therefore, network support is very important for mobile applications.Android完全支持JDK本身的TCP，UDP网络通信API，也可以使用ServerSocket,Socket来建立基于TCP/IP协议的网络通信，也可以使用DatagramSocket,Datagrampacket来建立基于UDP协议的网络通信。Android也支持JDK提供的URL，URLConnection等网络通信API。Android还内置了HttpClient，和HttpUrlConnectio

The traditional programming is in the following linear mode:Start---> code block a---> code block b---> block c---> Block d---...---> EndEach code block is a code that accomplishes a variety of things, but the programmer knows the code block a,b,c,d ... Order of execution, the only thing that can change this process is data. Enter different data, judging by the conditional statement, the process may be changed to a--->c--->e ...---> End. Each time the

connect, known as the connected descriptor. Send: Send data. RECV: Collect data. Close: Closes the connection, triggering four handshakes. 2. TCP Client: Socket: Creates a socket. Connect: Establishes the connection, indicating the purpose, and the service side of the Accept function corresponds. Send: Send data. RECV: Collect data. 3. UDP Service side: Socket: establishes a socket. Bind: Binds the listening IP and port. Recvfrom: Blo

the latest November 2014 list of "My favorite programming languages". This list clearly reflects the prevalence of various programming languages in different countries and regions of the country and abroad, and can provide a reference for software engineers and other people in the industry. Unlike the Tiobe rankings, the rankings are not based on indirect approaches, such as search engines, but from the N

technique can reduce the amount of data transmission network, but also to fundamentally avoid the network transmission process of Chinese problems. If you must transmit Chinese characters in the network, such as the chat information in QQ, this requires that the character set code used by the client program and the character set code used by the server-side program be consistent, which is the most basic way to solve the problem. 13.5 Summary On the Java language Network

1. Linux under All documents, therefore, the read-write operation of the file is indispensable; I/O programming for files includes primary file programming and standard file programming, the so-called standard I/O file programming is with "buffered I/O", while the primary file I/O