• Dynamic splicing expression


    Will we encounter the following query requirements in the project? For example, you need to find members that meet the following conditions:  Condition group 1: male members aged 30-40 Condition group 2: female members aged 20-30 Condition group 3: members aged 60-80 with Unknown Gender There are and relationships within condition groups, but there are […]

  • JSP on the machine in the sixth week


    I         @ page language=”java” contentType=”text/html; charset=utf-8″ pageEncoding=”utf-8″%> Insert title here register user name password 确认password Gender male female EMaile date of birth agreement 123 @ page language=”java” contentType=”text/html; charset=utf-8″ pageEncoding=”utf-8″%> request.setCharacterEncoding(“utf-8”); %> Insert title here Your registered user information is as follows out.println(request.getParameter(“username”)); out.println(request.getParameter(“logpwd”)); out.println(request.getParameter(“gender”)); out.println(request.getParameter(“mail”)); out.println(request.getParameter(“hiredate”)); %>     two、 […]

  • Compare excel and use pandas to analyze various usages of data


    background Understanding programming language first belongs to the world of programming apes. Now, with the improvement of domestic people’s education and the development of Internet technology, business personnel also begin to need to understand programming language slowly. Judging from the recruitment demand in recent years, python has become a rigid demand. Most of the business […]

  • Instead of H5, use pywebio module to realize web page directly


    The biggest advantage of pywebio is that it can write web pages like terminal scripts, and obtain users’ input and output at the browser level by providing a series of interactive functions. [read the full text] Running effect under pycharm editor Running effect under IPython editor Installing the python web plug-in pip3 install -U pywebio […]

  • MySQL – federated index series


    preface For the investigation points of joint index, there are probably these common questions in the interview, but the focus must be on some leftmost matching principles. Ask yourself if you can answer the questions related to joint index. What is a federated index Lookup process of Federated index What is the leftmost prefix rule […]

  • Memory leak! Do you really understand the reason for overriding the equals () and hashcode () methods?


    Basic concepts To compare whether two objects are equal, you need to call the of the objectequals()method: Judge whether the object addresses pointed to by the object reference are equal When the object addresses are equal,Then the data related to the object is also equal, including: object handle Object header Object instance data Object type […]

  • Force buckle database title 627 change gender


    Force buckle database title 627 change gender Given a salary table, as shown below, there are values of M = male and F = female. Swap all F and m values (for example, change all F values to m, and vice versa). Requires only one update statement and no intermediate temporary table. Note that you […]

  • C + + address book management system (add contact, display contact, delete contact, find contact, modify contact, empty contact, exit address book)


    1 /** 2 * projectnmae: address book management system 3 * function: 4 * add contact: add a new person to the address book 5 * display contact: displays all contact information in the address book 6 * delete contact: delete the specified contact by name 7 * Find Contact: view the specified contact information […]

  • Online English name random generator


    Online English name random generator Online English name random generator The tool supports batch random generation of English names. The maximum number of generated names for all genders is 1000 and the maximum number of specified genders is 500. It can be used for testing and so on. https://tooltt.com/english-name/

  • A fun gender judgment extension in PHP


    Today we’re going to learn about an extension. At the same time, it’s also a very small extension. In fact, to put it bluntly, maybe no one has used it at all. Of course, we just want to see what this extension is and what fun it is for the purpose of learning. Extended description […]

  • Prediction of age and gender using convolutional neural network and opencv


    Author | Nagesh Singh chauhanCompile FlinSource: towardsdatascience More and more applications are related to automatic classification of age and gender, especially since the rise of social platforms and social media. However, the performance of existing methods on real images is still obviously insufficient, especially compared with the recently reported great leap in performance of tasks […]

  • Can Python prove its unreliability by crawling the data of century Jiayuan?


    The text and pictures of this article come from the network, only for learning and communication, and do not have any commercial purpose. If you have any questions, please contact us in time for handling. The following article first level Python technology, by Parson sauce Novices and Xiaobai who have just come into contact with […]