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The block linked list of Oracle 21c is the most concerned feature, but there is another small feature rarely mentioned, that is Immutable tables - Immutable tables.The block linked list was introduced in 21c and then transplanted back to 19.10. The immutable list was introduced into Oracle 21.3 and 19.11 at the same time. Therefore, it can be c ...

1 demand Make a simple upgrade prompt page for the project; 2 Analysis Because it's a simple prompt page, you don't need a lot of content, just let users see clear prompts; Here, the whole page is divided into left and right parts, with a picture on the left (it looks more comfortable) and some prompt text on the right; 3 layout First, use ...

Author: xiaoyu WeChat official account: Python Data Science Purpose: This article introduces you to a primary project of data analysis. The purpose is to understand how to use Python for simple data analysis through the project. Data source: Bloggers collect official account data of Beijing secondary housing through crawler collectio ...

preface For microservices, configuration localization is a big disadvantage. It is impossible to restart the service every time you need to change the configuration. Therefore, the final solution is to externalize the configuration and host it on one platform, so that multiple modifications can take effect at one time without restarting the se ...

Click on the top "Deephub Imba" to pay attention to the official account. introduceThrough the development of the past decade, ordinary people have become more and more easy to enter the stock market, and the amount of funds entering and leaving the market every day has reached a record high.As an investor, you can cultivate experienc ...

1. Process oriented programming (Theory) Process oriented programming is like designing a product pipeline to solve problems distributed. For example, the user registration function Get user name and password Organize into fixed format File operation write file Simple design and clear thinking Take an example: def get_info(): username = inp ...

preface   you are already familiar with the MVVM framework pattern in these articles. The specific architecture pattern is shown in the following figure: The Activity/Fragment of the upper layer is represented as the View layer, which operates the data through the ViewModel, and then the Repository controls the source of the data, wh ...

This paper summarizes some common simple problem-solving methods encountered in the process of brushing questions: Array is a kind of linear table in data structure. It is often displayed in the form of integer array and string in algorithm problems. In fact, the array contains more data types. This paragraph mainly explains the solutions ...

preface It was new before Simple WPF column To record some content in the blogger's WPF learning process. This blog post is followed by the first one Simple WPF: Customize button appearance , implements a custom long and short press event button. Github project update address: https://github.com/mrchipset/simple-wpf.git Functional requiremen ...

The principle of YOLOv5 will not be described too much here. Start directly from the output head, and then design such as encoding and decoding:   1. The original output of yolov5 series is three head heads. The picture above is the picture with the input resolution of 608 * 608. If the input is changed to the pictu ...