Programming VIP

Chapter I functional interface 1.1 concept Functional interface in java refers to an interface with only one abstract method Functional interface, that is, the interface suitable for functional programming scenarios. The embodiment of functional programming in java is Lambda, so functional interface is the interface that can be used by L ...

Origin of the problem In the process of writing STM32 OTA program, I was confused about the implementation of the first word storage stack top address and the second word storage interrupt vector table in FLASH. I was not sure at which stage of the program these two addresses were fixed in FLASH. After querying the data, I found that they were ...

The company's project is an old project without any framework. The bottom layer is a self encapsulated framework, and there is no separation of controller, service and dao layers. Therefore, it is extremely uncomfortable, especially the sql part. Because it does not use mybatis, it is very complicated, and the original sql is still used. Theref ...

summary Next, we will analyze the source code of the external provider component. Based on tag v1 six https://github.com/kubernetes-csi/external-provisioner/releases/tag/v1.6.0 RBD usage analysis combined with CEPH CSI Introduction to the role of external provider (1) When creating pvc, the external provider participates in the creation o ...

Let's understand the application of JDBC in java through several JDBC cases   Before starting to study the case, we should have a general understanding of the use process and specification of JDBC   1. Basic application JDBC usage rules: JDBC call process: 1. Register the Driver interface implementation class provided by the MySQL server ...

Official Python column chapter 58, students stop, don't miss this article starting from 0! This article continues to introduce the classes in threading library, threading Barrier class. This class is very easy to use. Directly specify the value. By calling its wait method, you can Easily realize synchronous waiting of multiple threads. Yo ...

Automatic configuration of web application As analyzed in previous articles, @ SpringBootApplication will use the @ Import annotation to introduce AutoConfigurationImportSelector AutoConfigurationImportSelector will return the autoconfiguration class to be loaded through the spi mechanism These include dispatcher servlet autoconfiguration and ...

1, What is dichotomy? Dichotomy, also known as binary search, is generally used to find the position of a value in an ordered array or the insertion position of a given specific value; Compared with the O (n) complexity of traversing the entire array once, binary search can reduce the complexity to o (logn); The basic concept of bisectio ...

View and read permissions I Permission view ls -l file view file permissions ls -ld dir view directory permissions II Understanding permissions File permission information Directory permission information $: explanation for each digit [1] File type -Ordinary file d catalogue l Soft connection b Fast equipment c Character device s sock ...

  StackPanel   Arranges child elements in a horizontal or vertical row. StackPanel class nameremarksjurisdictionOrientationPropertyIdentification Orientation Dependency properties.public   nameremarksjurisdictionCanHorizontallyScrollGets or sets a value indicating whether content can scroll horizontallypublicCanVerticallyScrollGets or se ...