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First, link to several blog addresses: Analysis of C + + virtual function table cout << "Virtual function table address:" << (int*)(&b) << endl; cout << "Virtual function table - first function address:" << (int*)*(int*)(&b) << endl; In this blog, cout < < virtual function table add ...

catalogue What is the pointer Pointer type The types of pointers are as follows: Meaning of pointer type: Field pointer Pointer operation Pointers and arrays Secondary pointer What is the pointer definition: Pointer is an important concept and characteristic in C language, and it is also a difficult part to master C language. ...

HashMap in Java uses the linked list method to solve hash conflicts. The HashMap principle is that key value pairs with the same bucket subscript are stored in a linked list. When the linked list becomes longer, searching and adding (you need to determine whether the key already exists) need to traverse the linked list, and the speed will becom ...

We have already touched the topic of pointer in the chapter of pointer at the primary stage. We know the concept of pointer: A pointer is a variable used to store an address, which uniquely identifies a piece of memory space.The size of the pointer is fixed at 4 / 8 bytes (32-bit platform / 64 bit platform).Pointers are typed. The pointer typ ...

  Title: Give two ordered integer arrays nums1 and nums2, and two integers m and n, representing the number of elements in nums1 and nums2 respectively Please merge nums2 into nums1 so that the merged array is also arranged in order Note: the merged array should not be returned by the function, but stored in the array nums1. It is assum ...

1, poll system call Poll and select adopt the polling method, that is, each call scans the entire set of registered file descriptors and returns the ready file descriptors to the user program. Therefore, the time complexity of their algorithm for detecting ready events is O(n). However, the way in which poll describes the fd set is different fr ...

Welcome to my official account, and get more of my notes.   O_o   >_<   o_O   O_o   ~_~   o_O   this paper introduces how to design C language interface in the form of handle.   interface design is essential in the implementation of collaborative development projects. For C + +, there are many interfaces using class member fu ...

1. Pointer The pointer variable can be used to save the address (usually understood as an address) When we read a pointer, we have to know two things 1) Pointer type From a syntactic point of view, you just remove the pointer name from the pointer declaration statement, and the rest is the type of the pointer. This is the type of the pointe ...

Using heap memory in C + + programming is a very frequent operation. The application and release of heap memory are managed by programmers themselves. However, using ordinary pointers is easy to cause problems such as memory leakage (forgetting to release), secondary release, memory leakage in case of program exceptions, etc. All C++11 introduc ...