Programmer Think

DevExpress Services passes commands from the ViewModel to controls in the View, which allows you to modify the UI without detaching the application layer. Get tool download - devaexpress v21 two DialogService Allows you to display a dialog box. Interface IDialogService Managed control XtraFormFlyoutDialogRibbonForm Global registration C ...

In the process of database operation and maintenance, hardware upgrading, host replacement or test environment based on the current production library are often carried out. At this time, it is necessary to form a target library that is the same as the original library. At this time, physical migration is a more convenient method. Its main purp ...

1, ACWing: 01 knapsack problem (1) Title Description          There are # NN items and a backpack with a capacity of # VV #. Each item can only be used once. The volume of item ， ii ， is ， vivi and the value is ， wi. Solve which items are loaded into the backpack, so that the total volume of these items does not exceed the backpack cap ...

Recently, I have spare time to code words. Although the foundation of Java is really basic, it is slow and difficult for me to learn. I think I can't forget that I can't learn linguistics. I decided to write this article piecemeal, and I want to write it as easy as possible to understand, so as to exercise my ability to speak human words. Let's ...

rabbitMQ learning (II) advanced features and clusters When we study middleware, it is often easy to get started (just be able to use API), but to achieve high availability and high performance of MQ, we still need to know some of its advanced features. Advanced features of rabbitMQ Ensure the reliability of MQ Students who have studied TCP ...

OOM memory OOM: out of memory For the memory related configuration of the JVM, there are corresponding recommendations on many open source JAVA components eg:http://rocketmq.apache.org/docs/system-config/ 1. There are not too many JVMs on the memory allocation line > jvm 70% of heap memory%Total machine memory (empirical value) > ...

1. Concept and nature of queue 1.1 definition: Queue is an ordered data set, which is characterized by The addition of new data items always occurs at one end (often referred to as the "tail end")The removal of existing data items always occurs at the other end (usually referred to as the "first front" end) When the data ...

1. Process? Thread? Multitasking? In fact, there are a lot of cool programs in each process, such as cool browser, cool video, and so on. The thread is a branch or phenomenon in the process, which is an independent execution path. A process includes at least one thread. Threads can be understood as improving the efficiency of program operation, ...

Mengxin entering the pit (please comment in the comment area if you have any suggestions) This is the first article I published and the beginning of my entry into society. I firmly believe that as long as I work hard, I will become a big man in the future. (I will often publish some knowledge points and some small java projects in the futu ...

Brush on the buckle these days Some binary tree problems, rely on the basis (pre order traversal ~ middle order traversal ~ subsequent traversal ~ sequence traversal) to solve the problem. Of course, there are many methods to solve the problem.    [introduce the basic traversal first] Preorder traversal The first step is to ...