deer vector

Vector applications (element traversal, insertion, deletion, switching, etc.), vectorHere is a summary of some common applications of vector containers. For the vector constructor and initialization, refer to http://blog.csdn.net/lsh_2013/article/details/21191289. Element Traversal Use an iterator to access a vector El

Label: gradient descent method, cut vector, method Vector Zookeeper First, it indicates that the gradient is perpendicular to the cut vector of the curve, that is, the gradient direction is the direction of the normal vector: Set the curve x = x (t), Y = Y (T), and z = z (T) to the surface u (x, y, z) = a curve on C (

for the following part of the code, the VS2010 Windows platform prompts the array to cross (compile through, execute EXE prompts) but the codeblock is normal under deep Linux. The first form of /*vector ... 1.OutLineHand is a custom encapsulated contour class that contains data members and member functions. 2.filterContours is the vector 3.OutLineHand is a custom encapsulated contour clas

C ++ is based on the vector graphics library cairo graphics, vector graphics cairo // Sudo apt-get install libcairo2-dev // pkg-config -- cflags -- libs cairo //-I/usr/include/cairo-I/usr/include/glib-2.0-I /usr/lib/x86_64-linux-gnu/glib-2.0/include-I/usr/include/pixman-1-I/usr/include/freetype2-I/usr/include/libpng12-lcairo # include Compilation in Ubuntu: G ++ 'pkg-config -- cflags cairo 'test_cairo.cpp

Today, I have nothing to do with it. I 've been reading about it for a long time on my computer. When I saw 43rd entries, I found that, as mentioned above, the algorithm replaces the manual loop. No doubt arises. I remember the operator [] operation (subscript operation) was the most efficient loop when I read the vector source code ). The algorithm is fast. The following is a test code: // Test class and call Function Class AAA{Public:Void MakeFul

C ++ Study Notes (15th): How the vector object grows in the memory space, learning notes vector How does a vector object increase in memory? We all know that vector objects are dynamically stored. From this point of view, they are a bit like linked lists, which can dynamically increase or decrease elements. We also kn

Vector series in practice c ++ -- use std: find and std: find_if algorithms for vector (custom class) Previously, my blog talked about some usage of std: find and std: find _ if, but not about the custom class stored in the vector. How to Use std:: find and std: find_if? First define a class: class Item{private: std::string m_ItemId; int m_Price; int m_

Vector of C ++ sequential containers, vector of sequential containers What is container Container, as its name implies, is a place for storing things. C ++ containers store certain data structures for data search or sorting or other special purposes. As we all know, common data structures are similar to arrays.Array, Linked listList, TreeTreeStackStack, QueueQueue, HashHash Table, SetSet, I

In practice, the vector series in c ++ -- Some vector exceptions Today, we will write some vector exceptions that can be captured. Out_of_rangeThe array is out of bounds. The vector automatically increases the capacity, but if the index exceeds the current size, an exception is thrown. # Include # Include

Vector Vectors are collections of objects of the same type. Each object in the collection has a corresponding index. Vectors are often referred to as containers (container).To use vectors, you need to: #include The vector is a class template (classes template). C + + has functional templates and class templates. The template itself is not a function or class, it must be instantiated by the co

As in the title, if I were to answer before, I would say, yes, in the multi-threaded environment to operate the vector, do not need to add synchronized.But I accidentally saw an article today, I found that my previous idea was wrong, the address of this article:http://zhangbq168.blog.163.com/blog/static/2373530520082332459511/I extract the key part:Vectors are slower than ArrayList because the vectors themselves are synchronized, and ArrayList is notT

Android5.0 vector animation-[initial recognition of Vector Graphics SVG and VectorDrawable], Android5.0 + advanced animation Development describes how to use VectorDrawable technology, besell curve technology, and PathMeasure technology to achieve cool animation. What are the points worth learning about Frame Animation, intercept animation, and attribute animation compared to the previously learned frame an

Recently want to learn the next Lucene, the previous run of the demo will feel very magical, what principle, especially to find the highest similarity, the best results. Simply jump directly to this question, a lot of data are mentioned in the VSM (vector space model) is a vector spatial models, according to this model can be the search results of the optimization of the screening, and currently do not know

Vector series in practice c ++ -- using vector to construct two-dimensional arrays 2D arrays are sometimes used, but few use vector to construct a 2D array. First of all, it should be clear that there is no two-dimensional array in the computer world, just a concept of the user. In fact, our so-called two-dimensional array must also be a continuous memory. In