Programming VIP

Abstract factory The object creation mode bypasses new to avoid the tight coupling caused by the object creation (new needs to rely on specific classes), so as to support the stability of object creation. It is the first step after abstracting the interface motivation It mainly solves a series of "interdependent objects". The F ...

Byte 8.29 written test replay (in question recall) Question 1 natural numbers a and b Simple topic meaning Give the number a and B, and then give a number + 1 in the first round, a number + 2 in the second round, and a number + i in the i round. You can choose which number to add in each round. Ask you to become the same minimum number of ro ...

Series blog [Cherno C + + Notes P1~P10] installation, linker, variable, function, header file [Cherno C + + Notes P11~P20] judgment, loop, pointer, reference, class [Cherno C + + Notes P21~P30] static, enumeration, constructor, destructor, inheritance, virtual function, interface, visibility preface This series of videos needs some found ...

Title Description: Problem Description: there are 4 threads and 1 common character array. The function of thread 1 is to output A to the array, the function of thread 2 is to output B to characters, the function of thread 3 is to output C to the array, and the function of thread 4 is to output D to the array. It is required to assign ABCD to t ...

preface This paper is mainly from torch jit. Trace interface, open the door of Python JIT, and introduce it in normal NN The process of module forming scriptModule after trace and the C + + classes involved. Because there are a lot of contents involved, here are some relatively important classes from the perspective of source code or that ...

1. Download MinGW compiler The difference between IDE and compiler IDE (integrated development environment) is an application program used to provide a program development environment. It generally includes tools such as editor, compiler, debugger and graphical user interface. It is a development software suite Compiler: converts one languag ...

Core Dump/Segmentation Fault core dump caused by modifying constants char *q = "cannot be modified."; *(q + 1) = 'A';//Modified string literal 1 pointer 1.1 Dangling pointers Pointer to the memory area that has been freed. As shown below, the local variable of the sub function has been released, but its reference is returned to a poin ...

Single valued binary tree If each node of a binary tree has the same value, the binary tree is a single valued binary tree. true is returned only when the given tree is a single valued binary tree; Otherwise, false is returned. Example 1: Input: [1,1,1,1, null, 1] Output: true Example 2: Input: [2,2,2,5,2] Output: false link /** * Definition ...

explain 1 qt version related macros 1.1 QT_VERSION This macro is expanded into the numerical form 0xMMNNPP (MM = major, NN = minor, PP = patch), indicating the Qt compiler version. For example, the Qt compiler version is Qt 5.9 1, then QT_VERSION is 0x050901. This macro is often used for conditional compilation settings. Different code segmen ...

Eight principles of face object design Singleton mode Definition: ensure that a class has only one instance, and provide a global access point for the instance 1. Motivation In software systems, some classes must ensure that they have only one instance in the system to ensure their logical correctness and efficiency 2. Realization 2.1 ...