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The multi-document interface is the so-called MDI, which was introduced from the Microsoft Excel spreadsheet program in Windows 2.0. This is because the Excel spreadsheet user sometimes needs to operate multiple tables at the same time, MDI provides great convenience for such operations on multiple tables, so an MDI program is generated. In Windows 3.1, MDI has been widely used. The program manager and file manager in the system are both MDI programs.
Visual C # is the next-generation mainstream
taken into account.
Handle errors during initialization
For some reason, some errors may occur during initialization. If it appears in the Register process, we can choose to continue initialization to reduce the functions provided by the module. This is the common practice. If we think that the module cannot be loaded due to a serious error, in order to release the kernel space, we should clear all registration before the error.
In a common program, Goto is undesirable, but it is not del
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Muduo network programming example 7: connecting to the server and its Automated Testing
Chen Shuo (giantchen_at_gmail)
Blog.csdn.net/solstice t.sina.com.cn/giantchen
This is the seventh article in The muduo network programming example series.
Muduo full artic
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high-order Lambda functions example
Many programming languages support the concept of higher-order functions. A higher-order function is a lambda expression that takes another lambda expression as its argument or returns a lambda expression. You can use the function class to make C + + lambda expressions behave like higher-order functions. The following
I. instance description
This example uses Java to implement a very simple Sorting Algorithm ------ bubble algorithm. Sorting algorithms are often used in software programming of any scale. For example, in desktop tools and management information systems, in addition, sorting algorithms are widely used in industrial statistics and scientific computing. Through the
Good, the previous blog share I summed up the Jsp-servlet-javabean three-tier architecture programming model implementation ideas and basic flow, next to share an MVC programming pattern implementation Example-login verification process, here I still use a static authentication user name and password, The process of connecting to the database my other blog has, h
The example in this paper describes the C # socket network programming techniques. Share to everyone for your reference. The specific analysis is as follows:The client wants to connect to the server: first know the IP address of the server. And the server has a lot of applications, each of which corresponds to a port numberSo the client wants to communicate with an application on the server and must know th
This article describes the C language of the generic programming method, share for everyone to use for reference. The specific analysis is as follows:
First, generics programming allows you to write fully generalized and reusable algorithms that are as efficient as algorithms designed for a particular data type. In C, this type of generic programming can be achi
The examples in this article describe JavaScript-functional programming. Share to everyone for your reference. The specific analysis is as follows:
JS, like other dynamic languages, can write higher-order functions, and so-called higher-order functions are functions that can manipulate functions. Because in JS the function is a thorough object, belonging to the first class of citizens, which provides a prerequisite for functional
The threading module of Python provides multiple lock-related methods. the multiple threads of Python cannot be executed at the same time. Therefore, the use of locks is critical, the following is an example of how to use the thread lock in Python programming: the threading module of Python provides multiple lock-related methods. the multiple threads of Python cannot be executed simultaneously, as a result,
LinuxLowerCMulti-thread programming example
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When learning things, examples are often the most interesting. I always learn basic theories and don't do it. I feel no sense of accomplishment. The following is an example. We create two threads to increase the number of threads.Maybe this in
This article mainly introduces the application of xpath in php + xml programming. The example analyzes the functions, definitions, and usage skills of xpath. For more information, see
This article mainly introduces the application of xpath in php + xml programming. The example analyzes the functions, definitions, and u
This article mainly introduces JavaScriptAOP programming. The example analyzes the basic skills of javascript to implement AOP programming. if you need it, you can refer to the example below to describe JavaScript AOP programming. Share it with you for your reference. The de
tablename table) throws ioexception {htable table = new htable (CFG, tablename); get = new get (bytes. tobytes (ROW); Result result = table. get (get); system. out. println ("get" + result);} // use htable scan to obtain all data information of the tablename table. Public static void scan (string tablename) throws ioexception {htable table = new htable (CFG, tablename); scan = new scan (); resulttables = table. getscanner (SCAN); For (Result s: result)) {system. out. println ("scan" + resultfai
. get (tablename, "row1"); hbasetest. scan (tablename); If (hbasetest. delete (tablename) = true) {system. out. println ("Delete table" + tablename + "success") ;}} catch (exception e) {// todo: handle has tione. printstacktrace ();}}}
Run the result of commenting out the delete step:
Iv. Summary
The interaction between hbase and Java APIs is currently outstanding. In future hadoop programming, you can make proper use of hbase to improv
This article mainly introduces the definition and usage of PHP object-oriented programming classes, and analyzes the definition, instantiation, _ set () and _ get () of php classes in the form of instances () for more information, see the following example to describe the definition and usage of the PHP object-oriented programming class. We will share this with y
, the performance can be improved by speedup times. Amdahl's law describes what parallel can do and cannot do. It is an ideal situation, and the actual situation is much more complicated. For example, concurrency is likely to cause resource competition, and various locks need to be added, so that concurrency is often in the waiting state. concurrency also brings the time overhead of the operating system for thread scheduling switching, add Ws. However
Iocp is the most complex and mature model in the windows I/O model. It is used to solve large-scale concurrent client requests. This model has been applied in many windows APIs. In the. NET Framework class library, there are also many classes using the iocp model. The most notable example is the Thread class. There are also issues with large-scale concurrent requests in WCF, but the words we hear from many official documents are often concurrency cont
simple interface is all, let the socket to organize data to meet the specified protocol. Façade mode, in its own words, is the system to provide a single interface to the outside world does not need to understand the internal implementation.4. There are many frameworks, why are you still starting from the socket? There are many cross-platform network programming frameworks, such as the ssh,c/c++ boost in Java.There are many distributed frameworks,
Objective
Recently watching C # concurrent programming • Classic example "This book, this is not a theoretical book, but this is a main talk about how to better use the current c#.net for us to provide these APIs of a book, most of the book is some examples, in the daily development is often used.
Some of the ideas in the book agree, for example, the author said
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