Programmer Think

describe std::set template <class T, class Compare = less<T>, class Alloc = allocator<T>> class set; A set collection is a container that stores unique elements in a specific order. In set, the value of the element also identifies it (the value itself is key and the type is T), and each value must be unique. The values o ...

preface Through the introduction in the previous section, we can calculate the camera motion, but we don't know the specific position of feature points in space. In monocular SLAM, we cannot obtain the depth information of pixels only by relying on a single image. We need to estimate the depth of map points by triangulation. Triangulation Tr ...

Project introduction Recently, I learned about STL library and some practical containers. At the same time, I am also a chess lover. I wondered if I could make a chess game applet and use the knowledge I learned, so I started to do this project, which took about two days to basically complete, However, there are still some functions (general p ...

catalogue introduce Introduction to common usage 1. Definition of set 2. Access to elements in the set container 3. set common function analysis 1)insert() 2)find() 3)erase() 4)size() 5)clear() Common use extend introduce Set is translated into a set, which is an internally ordered container without duplicate elements. In the exa ...

Layout of memory space Each application has its own independent memory space, which generally has the following areas Stack space Every time a function is called, a continuous stack space will be automatically allocated to store the local variables generated by the function, which will be automatically recycled after the function is called ...

A function is a set of statements that perform a task together. Every C + + program has at least one function, that is, the main function. All simple programs can define other additional functions. You can divide the code into different functions. It's up to you to divide the code into different functions, but logically, the division is usuall ...

note: Llvm3 is required Version 7 and above You will find that these tutorials are described from the bottom up. It may be difficult to understand at first reading. The only way is to read them several times. set up First, make some settings, mainly adding the codegen() function to all abstract syntax trees ///ExprAST - all expression nodes ...

Description: the difficulty of this topic is not very high, because the topic has described the ideas almost, but there are some details to pay attention to Title: Solution 1: using char array #include<iostream> #include<string> using namespace std; int main() { string s1, s2, s3, s4; cin >> s1 >> s2 >> s3 ...

1, Variable Variable: open up a space in memory to store the corresponding value. The value stored in this space can be changed Variable declaration: tell the compiler that there is a variable. The compiler opens up a space in memory. If there is no assignment, the stored value is a random value Variable declaration syntax:   type var ...

Class is like a container, putting the same transaction in the same place. Equivalent to Xiao Ming, Xiao Hong, etc. all belong to the category of people. Xiao Ming is also called object in c + +. Take Xiao Ming as an example: Xiao Ming has his own height, weight and age. These are the attributes that Xiao Ming has called objects. When Xiao M ...