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In this article we will be discussing the working, syntax and examples of list::front() and list::back() functions in C++ STL.What is a List in STL?List is a data structure that allows constant time insertion and deletion anywhere in sequence. Lists are implemented as doubly linked lists. Lists allow non-contiguous memory allocation. List performs better insertion extraction and moving of element in any position in container than array, vector and deque. In List the direct access to the element is slow and list is similar to forward_list, but forward list objects are single linked lists and they can only be iterated ... Read More
In this article we will be discussing the working, syntax and examples of list::splice() function in C++ STL.What is a List in STL?List is a data structure that allows constant time insertion and deletion anywhere in sequence. Lists are implemented as doubly linked lists. Lists allow non-contiguous memory allocation. List performs better insertion extraction and moving of element in any position in container than array, vector and deque. In List the direct access to the element is slow and list is similar to forward_list, but forward list objects are single linked lists and they can only be iterated forwards.What is ... Read More
In this article we will be discussing the working, syntax and examples of list::rbegin() and list::rend() functions in C++ STL.What is a List in STL?List is a data structure that allows constant time insertion and deletion anywhere in sequence. Lists are implemented as doubly linked lists. Lists allow non-contiguous memory allocation. List performs better insertion extraction and moving of element in any position in container than array, vector and deque. In List the direct access to the element is slow and list is like forward_list, but forward list objects are single linked lists and they can only be iterated forwards.What ... Read More
In this article we will be discussing the working, syntax and examples of queue::swap() function in C++ STL.What is a queue in C++ STL?Queue is a simple sequence or data structure defined in the C++ STL which does insertion and deletion of the data in FIFO(First In First Out) fashion. The data in a queue is stored in continuous manner. The elements are inserted at the end and removed from the starting of the queue. In C++ STL there is already a predefined template of queue, which inserts and removes the data in the similar fashion of a queue.What is ... Read More
In this article we will be discussing the working, syntax and examples of queue::push() and queue::pop() functions in C++ STL.What is a queue in C++ STL?Queue is a simple sequence or data structure defined in the C++ STL which does insertion and deletion of the data in FIFO(First In First Out) fashion. The data in a queue is stored in continuous manner. The elements are inserted at the end and removed from the starting of the queue. In C++ STL there is already a predefined template of queue, which inserts and removes the data in the similar fashion of a ... Read More
In this article we will be discussing the working, syntax and examples of queue::empty() and queue::size() functions in C++ STL.What is a queue in C++ STL?Queue is a simple sequence or data structure defined in the C++ STL which does insertion and deletion of the data in FIFO(First In First Out) fashion. The data in a queue is stored in continuous manner. The elements are inserted at the end and removed from the starting of the queue. In C++ STL there is already a predefined template of queue, which inserts and removes the data in the similar fashion of a ... Read More
In this article we will be discussing the working, syntax and examples of queue::front() and queue::back() functions in C++ STL.What is a queue in C++ STL?Queue is a simple sequence or data structure defined in the C++ STL which does insertion and deletion of the data in FIFO(First In First Out) fashion. The data in a queue is stored in continuous manner. The elements are inserted at the end and removed from the starting of the queue. In C++ STL there is already a predefined template of queue, which inserts and removes the data in the similar fashion of a ... Read More
You can use aggregate function SUM() with GROUP BY clause to achieve this.Let us create a table. The query to create a table is as follows −mysql> create table SelectPerMonthDemo -> ( -> Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, -> Price int, -> PurchaseDate datetime -> ); Query OK, 0 rows affected (2.34 sec)ExampleInsert some records in the table using insert command with one of them would be the date of purchase. The query is as follows −mysql> insert into SelectPerMonthDemo(Price, PurchaseDate) values(600, date_add(now(), interval -1 month)); Query OK, 1 row affected (0.42 sec) ... Read More
You can check the landscape of HANA system, navigate to Landscape tab in HANA studio. Services show all the services running on HANA system.The following screenshot shows SAP HANA system and all the key services running under system Landscape for the same system.You can see the service name corresponding to each server in HANA system landscape.
Consider a class Tester which has implemented Cloneable interface. Now you can initialize an object using following five ways:1. Using new keyword.Tester tester1 = new Tester();2. Using Class.forName() methodTester tester2 = (Tester)Class.forName("Tester").newInstance();3. Using clone method.Tester tester3 = tester1.clone();4. Using Constructor.forName() methodTester tester4 = Tester.class.getConstructor().newInstance();5. Using DeserializationObjectInputStream objectInputStream = new ObjectInputStream(inputStream ); Tester tester5 = (MyObject) objectInputStream.readObject(); Using new keyword is the most preferred one.