Programmer Group

This is a community collaborative translation article. The translation has been completed. For more information, please click Introduction to collaborative translation . Although most PHP developers know how to use Composer, not everyone is using it effectively or in the best way. So I decided to summarize something important to my daily wor ...

PixPro is the first to use pixel level contrast learning for feature representation learningThe above figure is the flow chart of the whole algorithm, which will be analyzed in detail nextForward propagationInput is the input image, and the dimension size is (b, c, h, w)augmentation: cut the same input in random size and position and reduce it ...

1, Object description Source code note: the Object class is the Root node of the hierarchical relationship of all classes. As the superclass of all classes, including arrays, it also implements the methods of this class. Note that what is said here is very clear, referring to the class level. Therefore, there is a common saying in Java that e ...

1, IOC Simple Science PopularizationIOC is the Inversion of Control (IOC)If you need to use many member variables F1 and F2 in a class A.Traditional writing: if you want to use these member variables, you can use new F1(), new F2(), etc.The IOC principle is: No! We don't want new. In this way, the coupling is too high. Once the construction met ...

prefaceAs the data structure of Go core and the communication mode between Goroutine, Channel is an important structure supporting the high-performance concurrent programming model of Go language. This section will introduce the design principle, data structure and common operations of pipeline Channel, such as Channel creation, sending, receiv ...

1. What is adapter mode? Convert the interface of a class into another interface clients expect.Adapter lets classes work together that couldn't otherwise because of incompatible interfaces. Adapter Pattern: transforms the interface of a class into another interface expected by the client, so that two classes that cannot work together due to i ...

1. Recursion The programming technique of a program calling itself is called recursion. As an algorithm, recursion is widely used in programming languages. A procedure or function has direct or indirect meaning in its definition or description A method of indirectly calling itself, which usually transforms a large and complex problem la ...

Due to the closure of the school in the first half of 2020, C language is an online homework at the end of the term. The following is the requirement, which is to make a calculator. CPF course 2020 Write a program that can help primary school students practice mathematics. a) The program will first ask the user for his ID number (including ...

JavaScript data structure and algorithm (IV) queue Cognitive queue Queue is a linear table with limited operation. Its feature is first in first out. (FIFO: First In First Out) Limitations: Deletion is only allowed at the front of the table.Insert operations are only allowed at the back end (rear) of the table. Scenes similar to queue stru ...

leetcode of algorithm interview in Dachang 9. Bit operationVideo tutorial (efficient learning): Click to learncatalog:1. Introduction2. Time and space complexity3. Dynamic planning4. Greed5. Binary search6. Depth first & breadth first7. Double pointer8. Sliding window9. Bit operation10. Recursion & divide and conquer11 Pruning & bac ...