Programmer Think

Automated Test Framework - pytest pytest is one of Python's most popular unit testing frameworks that helps you write test scripts more easily and supports a variety of complex test scenarios that can be used for app testing as well as function testing Official documents: https://docs.pytest.org/en/latest/   pytest has the following advant ...

Sliding window: there are two pointers L,R. Add a number r to move to the right, and subtract a number L to move to the right. Generally, it is necessary to maintain the maximum or minimum value in the window, and the query complexity can be O (1). Generally, two-way queue assistance is needed, such as Title: sliding window Suppose it is a w ...

A. Little Artem Question meaning: this question is relatively simple. To put it simply, I want to give you a matrix of n*m, in which "B" stands for black and "W" stands for white. It is required that both of them meet the equation: B=W+1. Problem solving: it's a simple sign in problem, but I used a complex method in the comp ...

Talk about it casually In fact, GCD has been contacted by all of us, and we are not explaining what GCD is. Why do we suddenly want to talk about the semaphore problem? In recent interviews, when I asked the interviewers how to deal with a series of operations after multiple requests are completed, some said to create a temporary variable to do ...

This article updates the address synchronously: https://dotnet9.com/11520.html https://terminalmacs.com/861.html Read navigation: 1, Function description 2, Code implementation 3, Source code acquisition 4, References 5, Later plans 1, Function description Complete Mind Map: https://github.com/dotnet9/TerminalMACS/blob/master/docs/TerminalM ...

1, Why the io stream must be closed in java When we new a java stream object, we not only create an instance object of the corresponding class in the computer memory. In addition, it also takes up the corresponding system resources. When there is no reference to an instance object in memory, the java garbage collector will recycle it automatica ...

Article directory char,unsigned char,uint8_t,uint16_t Summary Turn NSString uint8_t,uint16_t On the range of value char int Calculation method of value range sizeof() Some system macros Recommended reading char,unsigned char,uint8_t,uint16_t Summary Basics In C/C + +, char is used to de ...

The data generated by C + + when the program is running belongs to temporary data, which will be released after the program is running. Sometimes we need to store some simple data permanently. At this time, we can use files to persist the data. There are two types of files: 1. Text file: the file i ...

Linux mmc Driver Framework Summary mmc_host mmc_card mmc_ios mmc_dirver mmc_bus_ops mmc_host_ops mmc_command mmc_data mmc_request sdio_func Summary data structure describe struct mmc_host Used to represent an mmc host controller struct mmc_card Used to represent an mmc device (card) st ...

"appearance" is really a magic "attribute" in iOS. It is used to set global attributes. For example, it has written the automatic row height setting of 10000 times tableView. (PS. wrote a big bug. iOS 11 two days ago. All cells are the default height. The comment in Xcode9 is the default value, that is, ther ...