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A course in image processing at the school eventually requires submitting an image processing system. Just before I knew something about opencv, let's write a simple face recognition applet The effect diagram is as follows   Author IDE uses Pycharm, GUI programming uses built-in tkinter directly Environmental Science: python3.6 opencv4 ...

1. Preface Baidu Online Map has been used for a long time, and it has been continuously improved until today. In addition to basic map loading and setting some related attributes, various js functions are added to load data directly and asynchronously, such as dynamically adding points, rectangles, circles, administrative divisions and so on.Of ...

Spring Cache defect Spring Cache is a very good cache component. But in the process of using Spring Cache, Xiao Hei also encountered some pain points. For example, now there is a requirement: obtain user information in batches through multiple userids. Option 1 At this point, our code may be as follows: List<User> users = ids.strea ...

Introduction to Portal.MVC The project is based on MVC4+EF, with the basic functions of role, authority, user center and account (login, registration, password modification, password retrieval, etc.). Open source projects for reference nopcommerce This is an MVC project of e-commerce architecture. I simplified it. Before that, it was ...

Article directory 1, Problems and Solutions 2, Implementation principle of NestedScrollingParent2LayoutImpl3 2.1 let's review the nested sliding mechanism. 2.2 take a look at nested Scrollview 2.3 implementation principle of nestedscrollingparent2layoutimpl3 I wrote one before Nested slide &nd ...

Introduction Java 8 (also known as jdk 1.8) is a major version of Java language development. There are many new features in java8. This article focuses on Lambda expressions. Lambda expressions, also known as closures, are the most important new feature driving the java 8 release. Lambda allows functions to be passed as parameters to a method. ...

Source code: GitHub point here || GitEE point here 1, Relational data source 1. Dynamic data source The basic functions of dynamic management data source: data source loading, container maintenance, persistent management. 2. Relational database Different manufacturers of relational databases provide different connection methods, driver packag ...

1, Precision of floating point numbers Problem: the data type in JS is Number. This type uses IEEE754 format to represent integer and floating-point numbers. There are often some problems when using 64 bit double precision floating-point numbers in IEEE 754 standard. Composition: 1 sign digit, s for positive, 1 for ne ...

1. Inner Coarse Analysis of Variables 1. Default values for variables (1) If the variable is not assigned when it is initialized, then the stored variable is undefined (2) Example var lk; console.log(lk); 2. Declare multiple variables at the same time Two ways var name,age,sex; name = "kdfg"; age = 2; //or var name = "jsoaf",age,sex = ...

swagger2 was upgraded to 3 and renamed OpenAPI Spec, with some changes in all partial annotations, which are configured here with thinkphp6+swagger-php3.0 1. The front-end part git or dowload a swagger-ui to be able to access the service directory, such as where my nginx configuration points to the thinkphp6 root directory public, so download ...