Programming VIP

mysql5.7 minor version upgrade - windows Application scenario: upgrade mysql 5.7.20 to the latest 5.7.31, Windows Environment Download link on the official website: https://dev.mysql.com/downloads/mysql/5.7.html Note: mysql data must be backed up before operation to avoid problems during installation and can be remedied 1, Close and delete ...

In recent projects, the function of startup and self startup is useful. Here is a summary for everyone to learn and discuss! Actual combat drill Test mobile phone: Hongmi mobile phone Redmi 6A Android version 9 Huawei mobile phone DUA-AL00 Android version 8.1.0 Xiaomi tablet MI PAD 4 Android version 8.1.0 The above models have been tested ...

Project scenario: Recently, the requirement of the project is to obtain a new token if the token fails when requesting the interface, and finally use the new token to request the original requested interface. So here we will use the response Interceptor, which is used in my project EasyHttp , is the encapsulation of okhttp. You can have a look ...

1. Understand REST  the full name of REST is Representational State Transfer, which means Representational State Transfer in Chinese. It first appeared in Roy Fielding's doctoral thesis in 2000. Roy fielding is one of the main writers of HTTP specification. It is worth noting that REST does not have a clear standard, but is more like a des ...

Background introduction Recently, I'm studying lvgl, an open-source embedded image display framework, which is enough to support some resource deficient MCU to display some professional interfaces, such as the following And this Isn't it cool Put down Lvgl and don't watch for the time being. Because it is a user interface, most screens can ...

summaryIn project development, there are often the needs of marketing activities such as lucky draw, such as integral turntable, scratch music, slot machine and so on. In fact, the implementation method of the background is the same. This paper introduces a common implementation method of lucky draw.The whole lottery process includes the follow ...

1. Changes in life cycle: 3 X (upper) 2 X (bottom) It's not hard to see, vue3 0 and vue2 The life cycle function between 0 changes during destruction: beforeDestroy --> beforeUnmount destroyed --> unmounted Other differences mainly lie in the language used in writing stay ts Used in class Class component writing can refer to vue-c ...

"Contents"Demand 1: user active themeRequirement 2: user added themeDemand 3: user retention themeDemand 4: number of silent usersDemand 5: number of returned users this weekDemand 6: number of lost usersDemand 7: number of active users in the last three consecutive weeksDemand 8: number of active users for three consecutive days in t ...

Article catalogue Project preparation1. First meet Vue2. Template syntax3. Data binding4. The second way to write el and data5. MVVM model6. Event handling Basic useParameter transferModifier 7. Calculate attributes and monitor Calculation propertiesListening properties 8. class and style classstyle 9. Conditiona ...

Iterative process of React The main features of React from v16 to v18 include three changes: v16: Async Modev17: Concurrent Modev18: Concurrent Render The update process of Fiber tree in React is divided into two stages: render stage and commit stage. The render function of the component is called render when it is executed (what changes nee ...