deer vector

C++11 provides us with smart pointers, which brings us a lot of convenience.What about the assumption that unique_ptr is the element of a vector container?form the same:vectorBut how do you add elements to VEC?See below:#include#include#include usingnamespacestd;int main(){ vectorint>> vec; vec.push_back(1);//错误 return0;}First define a unique_ptr and then Push_back ():#include#include#include usingnamespacestd;int main(){ vectorint>> vec;

1. DefinitionVector2. Inserting elementsIf you want to define a = [[0,1,2],[3,4,5]], then:Correct insertion method vectorWrong insertion method vector3. LengthThe number of vector elements in vector　　About the use of vector

Test source#include2. Compiling3. Remove the random base address (for easy search)Instead of 04. Use Ida to open the call function in the main function5. Select address with OD load view6.call very much only look at the key to find the constructor of the vector with the object base address find something with Ida debugging with OD7. Run to the next break data followSure is CC.8. Run constructorsInitialization (STL objects have a feature the first one

Use vector containers, that is, to avoid the search, so today we list some STL find algorithm applied to the vector. Find ()Returns an iterator to the "the" in the range [First,last] that compares equal to Val. If no such element is found, the function returns last. #include find_end () searches the range [first1,last1) for the "Last occurrence of" sequence defined by [ FIRST2,LAST2), and returns a i

Requirements Required knowledge This article requires a basic understanding of html and css front-end code. Running EnvironmentStandard browser, compatible with IE7 Source code download Font Awesome provides you with a set of scalable Font vector icons that can quickly customize the size, color, and shadow of the icons. These can be achieved through CSS, no JS code is required. 3. Use CSS to customize the Icon size, color, and shadow. 5. Supp

The data structure we implement is to solve the dynamic open-up space usage during the running process (for example, we do not know how much we enter without stopping the input) Two principles: I. Stupid Methods How much space is used and how much space is opened for the first time? The second time we use space, we will open up space B larger than the first one, copy the data in A to B, then release a, and write new data in C. Disadvantage: copying is too many times and the efficiency is lo

Establishing equationsSet a to a point outside the line,B,c to two points in a straight line$\left\{\begin{matrix}(X-ax,y-ay) \cdot (cx-bx,cy-by) =0 \\FRAC{Y-CY}{X-CX}=\FRAC{Y-BY}{X-BX} \\end{matrix} \right.$?Solve the symbolic solutionUsing the Mathematics tool: solve[{(x?-? Ax) * (CX?-? bx)? +? ( Y?-? ay) * (Cy?-? by)? = =??? ??? 0,? (y?-? Cy) * (x?-? bx)? = =? (y?-? by) * (x?-? cx)},? {x,?y}]?? Come to the following: {{x?->?-(bx?-? cx)? ( Ax?bx?+?ay?by?-? ax?cx?-? a

For example, I have a piece of code as follows: Class cls_vector_item There is no problem with this code. When VCT. push_back (CVI);, when the internal space of VCT is insufficient, a new space will be applied and the object will be removed! However, note that this object should have been removed, but the internal object of the object we are currently in will be removed, but it will become garbage, that is, when the VCT applies for space, the old space is destructed, but our objects are st

Combine part of a label vector and accumulate it into a full vector

Vector or arraylist-which one is better? Why? The answer to this question cannot be generalized. Sometimes it is better to use vector. Sometimes it is an arraylist. Sometimes neither of them is The best choice. Don't expect a simple affirmative answer, because it depends on what you use them. Four of the following are to be considered: Factors: L API L synchronous processing L data growth L usage mode We wi

Label: style blog HTTP color OS Io ar Div html When setting the CPU parameters during the learning process of the nioshi II, the Reset vector and exception vector settings are encountered. Shows the parameter setting screen. Reset vector -- Reset vectorException vector -- execution VectorFirst, it indicates that both

Int main () {vector

C + + STL provides a very powerful sorting function sort, which can sort any array, struct, and class, let's take a look at the simplest array sort. The default ascending order, we can also add less or greater to tell the compiler what sort order we want.vectorint> v = {2015927}; // Ascending order sort (V.begin (), V.end ()), Sort (V.begin (), V.end (),less int>()); // descending order sort (V.rbegin (), V.rend ()), Sort (V.begin (), v.end (), Greaterint> ());If it's a two-dimensional array, or

mentioned. This is the function interval. Description :A: Taking two-dimensional space as an example, the linear equation is changed to +c=0 ax+by+c=0. The usage vector w instead (A, b) is represented by the feature vector x, which is the formula.B: For the straight line we learned. By substituting the negative instance point (0,0), we can see that the calculated result +1 is inconsistent with

STD: Difference Between Reserve and resize of Vector1. Reserve: Allocate space, change capacity but not size2.Resize: Allocate space. Changing the capacity also changes the size. If you know the vector size, resize it as an array without allocating extra memory. ReserveIt is a container reserved space, but does not actually create element objects. Before creating an object, you cannot reference the elements in the container. Therefore, when add

There is a copy function in the STL algorithm. We can easily write this code:#include #include #include using namespace STD;int_tmain (intARGC, _tchar* argv[]) {Doubledarray[Ten]={1.0,1.1,1.2,1.3,1.4,1.5,1.6,1.7,1.8,1.9}; vectordouble>Vdouble (Ten); vectordouble>:: Iterator Outputiterator=vdouble.begin (); Copy (darray,darray+Ten, Outputiterator); while(Outputiterator!=vdouble.end ()) {coutreturn 0;}So you want to use copy to set the to vector, so you

Dynamically assigned vector pointer Vector If it is a dynamically allocated vector pointer, you can only use the array method (the above Code is red) when inserting elements into the vector. the push_back () function has an error. Why? Use the shared_ptr vector point

Previous blogs have written about vectors using the sort algorithm, and vector some of the processing methods that have been written before.Just write it today vector . Sort by using the sort algorithm.#include #include #include #include #include BOOLCompare_int (intAMP;LHS,int RHS) {returnLHS > RHS;}BOOLCompare_first_letter (Const STD::unique_ptrSTD::string> AMP;LHS,Const STD::unique_ptrSTD::string> RHS)

The arraylist, inclulist, and vestor classes all implement the java. util. List interface, but they have different features, mainly as follows: I,Synchronization Arraylist and inclulist are not synchronized, while vestor is. Therefore, if thread security is required, arraylist or javaslist can be used to save costs for synchronization. But in the case of multithreading, sometimes we have to use vector. Of course, you can also package arraylist and his

Vector series in practice c ++ -- sort the vector (unique_ptr (string) using the sort algorithm (sort function error "two parameters should be input, but three parameters are provided) Previously, I wrote a blog post on sorting the vector using the sort algorithm.vector > . Today, let's write a pairvector > Use the sort algorithm for sorting. # In