Programmer Think

NEO400J Level Full-Text Index Construction Optimization 1. Scale of data volume (level 100 million) 2. Ways to Build Indexes 3. Exceptions Occurring in Index Building IV. Code optimization for full-text index 1,Java.lang.OutOfMemoryError 2. When accessing a database 3. Optimizing scheme 4. Optimize Code 5. Perform efficiency ...

Class and instance Classes are abstract templates, and instances are concrete "objects" created according to classes. Terminology explanation Class: A collection of objects that describe the same properties and methods. It defines the properties and methods common to each object in the set. Objects are instances of ...

1. parameterType (input type) (1) Pass simple types (such as int, which we can use directly) public Student getStudentById(Integer studentId); <select id="getStudentById" parameterType="int" resultType="student"> select * from tblstudent where studentId = #{studentId} </select> (2) Passing pojo objects     p ...

Xiaocai recently learned about ViewPager's animation, which I am ashamed to say has not been carefully understood for so long. Today, I intentionally learn about Android's basic animation. Android's basic animations include alpha (transparency) / scale (zooming) / translate (displacement) / rotate (rotation). Learn about scale gradient zooming ...

Today we are going to learn collision detection. Most games need to do collision detection because you need to know whether the ball collided, whether the bullet hit the target, whether the protagonist stepped on the shit. How should that be achieved? To put it bluntly, the principle is simple, that is, to detect whether there i ...