Programmer Think

reference 1,http://c.biancheng.net/view/7151.html Both auto and decltype keywords can automatically deduce the type of variable, but their usage is different: auto varname = value; decltype(exp) varname = value; Where varname represents the variable name, value represents the value assigned to the variable, and exp represents an expression ...

catalogue 1, Sequential structure 2, Branching structure 🍓 if statement 🍓 switch statement 3, Cyclic structure 🍓 while loop 🍓break 🍓continue 🍓 for loop 🍓 do...while() loop 4, Input and output in Java 🍓 Output to console 🍓 Format character 🍓 Input from keyboard V. summary 🚆 Brief description: Because the content ...

Recent projects have to dock a web service-style interface, because this type has never been docked before, so this time I have looked up some materials to learn 1. Brief introduction of Webservice WebService is a remote invocation technology that spans programming languages and operating system platforms. Through the standard communication p ...

Basic Java syntax (2) The wood that embraces is born at the slightest; The nine storey platform starts from the tired soil; A journey of a thousand miles begins with a single step—— Tao Te Ching 10, Scanner class (user interaction data type) From Java 5 to Java util. Scanner is a package. We can get user input through s ...

1. Use the SAR command to view the current disk IO read / writesar (System Activity Reporter system activity report) is one of the most comprehensive system performance analysis tools on Linux. It can report system activities from many aspects, including file reading and writing, system call usage, disk I/O, CPU efficiency, memory usage, proces ...

catalogue I What is the pointer II Pointer and pointer type 3. Field pointer 4. Pointer operation 5. Pointer and array 6. Secondary pointer 7. Pointer array I What is the pointer Understand pointer 1. Pointer is the number of the smallest unit in memory, that is, the address2. The pointer in spoken English usually refers to the p ...

Java file streaming and I/O file concept A file is where data is stored.File stream: files are operated in the form of stream in the program.Stream: the path of data between the data source (file) and the program (memory)Input stream: the path of data from data source (file) to program (memory)Output stream: the path of data from program (me ...

catalogue Creation of one-dimensional array Initialization of one-dimensional array Use of one-dimensional array Storage of one-dimensional array in memory Creation of two-dimensional array Initialization of two-dimensional array Use of two-dimensional arrays Storage of two-dimensional array in memory Array out of bounds Array as fu ...

Hello, everyone~ Internet plus era, business digitization has spread to every industry you can think of. There are more and more business functions and marketing methods, and the system is more and more complex. In the face of increasingly complex business systems, the brain is less and less used So smart people put forward the design idea ...

1, Gossip The weekend is coming again. Today, finish the spring blog, and then start the review of mybatis. I read it in July last year. If I don't write a blog, I'll soon forget it. Ha ha 2, Review mybatis and introduce integration methods 1. mybatis review mybatis has written a simple example before. You can take a look at the previous bl ...