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Record some concepts and problems learned during the programmed trading of commodity futures, which should be helpful for beginners to understand the concepts when they get started. OpenInterest of commodity futures Commodity futures market data contains data in an OpenInterest field. Users often ask how to obtain this data, which is very sim ...

(please keep it - > Author: Luo Bing https://blog.csdn.net/luobing4365) After introducing all the background knowledge, we can finally enter the substantive embedded programming. This paper plans to use YIE002 development board to make a USB HID device, which supports three communication modes to correspond to the three host comput ...

First, you need to install two necessary packages tensorrt and torch2trt. If tensorrt, you need to download the tar compressed package on the official website. It is recommended to download the tar package for installation, Official website , I downloaded version 7.2.3. torch2trt can clone projects on GitHub. My environment (tensorrt seems to w ...

brief introduction wego is a high-performance Web framework written in Go language, which can be used to quickly develop various applications such as RESTful services and back-end services. wego framework is a complete MVC framework, including routing module, database ORM module, view template processing and Session module. wego has the charac ...

We often use command-line tools in front-end development, such as @babel/cli,vue-cli,create-react-app wait. So how to create an npm command line tool? In fact, it's very simple. It only takes a few steps. establish 1 initialize npm project npm init package name: (cli) gogocode-cli version: (1.0.0) description: my-first-cli entry point: (ind ...

premise In my spare time after work, I think about writing a set of lightweight ORM framework based on JDBC with Javassist as the core, and studying the source code of mybatis, TK mapper, mybatis plus and spring boot starter JDBC, It is found that LambdaQueryWrapper in mybatis-plus can get the method information (actually CallSite informatio ...

1, Introduction Software Design Pattern, also known as design pattern, is a summary of code design experience that is repeatedly used, known by most people, classified and catalogued. It describes some recurring problems in the process of software design and the solutions to the problems. In other words, it is a series of routines to solve ...

ReentranLock Lock interface is a built-in attribute, not built-in in java language. It can realize synchronous access ReentranLock is the implementation class of Lock interface After java SE 5, a Lock interface (and related implementation classes) is added to implement the Lock function However, it is used to acquire and release locks expl ...

regular expression Learning regular expressions has always been a headache, but the main reason is that there are too many characters and rules. Therefore, for me, it is because of laziness. I can change this state by summing up carefully and slowly. Regular expression is actually a tool for string pattern matching, so as to realize the func ...

Foreword Python is a high-level programming language with interpretive, object-oriented and dynamic data types. It was invented by Guido van Rossum at the end of 1989 and the first public release was released in 1991. Since its launch, Python has been welcomed by the majority of developers. It has its excellence in the fields of website develo ...