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Flow API in Java 9 corresponds to Reactive Streams specification, which is a defacto standard. It contains a minimal set of interfaces that capture the heart of asynchronous publication and subscription.Below are the key interfaces of Flow API:1) Flow.Publisher: It produces items for subscribers to consume, and it contains only method: subscribe(Subscriber), whose purpose should be obvious.Syntaxvoid subscribe(Flow.Subscriber
In this tutorial, we will be discussing a program to find circumference of a circle.For this we will be provided with the radius of the circle. Our task is to calculate and print the circumference of that circle.Example Live Demo#include using namespace std; #define PI 3.1415 double circumference(double r){ double cir = 2*PI*r; return cir; } int main(){ double r = 5; cout
In this tutorial, we will be discussing a program to find the circumcenter of a triangle.For this we will be provided with three noncollinear points. Our task is to find the circumcenter of the triangle formed by those points.Example Live Demo#include #include using namespace std; //storing X and Y values #define pdd pair void lineFromPoints(pdd P, pdd Q, double &a, double &b, double &c){ a = Q.second - P.second; b = P.first - Q.first; c = a*(P.first)+ b*(P.second); } void perpendicularBisectorFromLine(pdd P, pdd Q, double &a, double &b, double &c){ pdd mid_point = make_pair((P.first + ... Read More
In this tutorial, we will be discussing a program to find the century for a year.For this we will be provided with a year. Our task is to find the century in which the given year falls.Example Live Demo#include using namespace std; void find_century(int year){ //year values can only be positive if (year
In this tutorial, we will be discussing a program to find area of a circular segment.Making a chord in a given sphere divides it into two segments - major and minor. Given the radius of the circle and angle making the minor segment, we are required to find the areas of both segments.Example Live Demo#include using namespace std; float pi = 3.14159; //finding area of segment float area_of_segment(float radius, float angle){ float area_of_sector = pi * (radius * radius)*(angle / 360); float area_of_triangle = (float)1 / 2 *(radius * radius) * sin((angle * pi) ... Read More
In this tutorial, we will be discussing a program to understand partition_point in C++.Partition point is a method which returns an iterator pointing to the first value in a given range. The range is a partitioned one in which the predicate is not true.Example Live Demo#include #include #include bool IsOdd(int i) { return (i % 2) == 1; } int main(){ std::vector data{ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 }; std::vector odd, even; std::stable_partition(data.begin(), data.end(), IsOdd); auto it = std::partition_point(data.begin(), data.end(), IsOdd); odd.assign(data.begin(), it); even.assign(it, data.end()); std::cout
In this tutorial, we will be discussing a program to understand pair in C++ Standard Template Library.Pair is a container defined in the utility header that contains two values. It is used to combine two values and associate them even if they are of different types.Example Live Demo#include #include using namespace std; int main(){ //initializing a pair pair PAIR1 ; PAIR1.first = 100; PAIR1.second = 'G' ; cout
In this tutorial, we will be discussing a program to understand override keyword in C++.Override keyword is used to override the function in a base class and define a separate function with the same signature in the child class.Example Live Demo#include using namespace std; class Base { public: //function to be override virtual void func() { cout
In this tutorial, we will be discussing a program to understand output iterators in C++.Output iterators are a part of the major five iterators. They function opposite of the input iterators in a way that they can be assigned values but can’t be accessed to fetch values.Example Live Demo#include #include using namespace std; int main(){ vectorv1 = {1, 2, 3, 4, 5}; //declaring iterator vector::iterator i1; for (i1=v1.begin();i1!=v1.end();++i1){ *i1 = 1; } return 0; }OutputNo output, because we cannot access values of output operators
In this tutorial, we will be discussing a program to understand ordered set and GNU C++ PBDS.Ordered set is a policy based structure other than those in the STL library. The ordered set keeps all the elements in a sorted order and doesn’t allow duplicate values.Example Live Demo#include using namespace std; #include #include using namespace __gnu_pbds; #define ordered_set tree int main(){ //declaring ordered set ordered_set o_set; o_set.insert(5); o_set.insert(1); o_set.insert(2); cout