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Articles by Vrundesha Joshi
Page 5 of 22
What uses are there for "placement new" in C++?
In this section we will see what is the placement new operator in C++. This placement new is another variation of new operator. The normal new operator performs two things. It allocates memory, and then constructs an object in allocated memory.The new operator allocates memory in the heap section and constructs objects there. But for the placement new operator, it constructs object at the given address. To deallocate memory, we can use delete keyword if the memory is allocated using new operator. But for placement new there is no placement delete feature.So in a nutshell, placement new allows you to ...
Read MoreCreate a list group heading in Bootstrap
To create a list group heading, use the .list-group-item-heading class in Bootstrap.You can try to run the following code to implement .list-group-item-heading class −Example Bootstrap Example Countries Asia India Nepal Europe Germany Italy Spain
Read MoreAdd HTML paragraphs into Bootstrap thumbnails
With Bootstrap, you can easily add paragraphs to thumbnails.You can try to run the following code to add HTML paragraphs −Example Bootstrap Example Thumbnail label This is demo paragraph! This is demo paragraph! This is demo paragraph! This is demo paragraph! This is demo paragraph! This is demo paragraph! This is demo paragraph! This is demo paragraph! This is demo paragraph! This is demo paragraph! This is demo paragraph!
Read MoreAdd a green background color to an element to set positive action with Bootstrap
Use the .btn-success class in Bootstrap to set a positive action to an element. You can try to run the following code to implement the .btn-success class −Example Bootstrap Example The following are FMCG companies: ITC Limited Nestle Britannia Industries Limited Click below if the above list is correct: Success
Read MoreC++ Program to Implement Adjacency Matrix
The adjacency matrix of a graph is a square matrix of size V x V, that represent a finite graph data structure using a 2D array, where V is number of edges of the graph. The each non zero elements in the matrix represent an edges of the graph. For example, if the graph has some edges from i to j vertices, then in the adjacency matrix at i th row and j th column it will be 1 (or some non-zero value for weighted graph), otherwise that value will be 0. In this article, we will learn how to ...
Read MoreC++ Program to Check the Connectivity of Undirected Graph Using BFS
The Breadth-First Search (BFS) algorithm is a graph traversal algorithm that starts at the tree root and explores all nodes at the present depth before moving to the nodes at the next level. In this article, we will discuss how to check the connectivity of a graph using BFS traversal algorithm. Understanding Connectivity of a Graph A graph is said to be connected if there is a path between every pair of vertices. To check connectivity of a graph, we will try to traverse all nodes using any traversal algorithm. After completing the traversal, if there is any ...
Read MoreIntel 8212 in mode 1
The figure below shows the working of 8212 in mode 1Fig: Working of 8212 in mode 1We use this mode generally when we want 8212 to function as an output port. Here, microprocessor drives DI7-0, and the device at the output receives the information on Do7-0. The clock to the latches is provided in this mode. 8212 latches the information on DI7-0 when the CS makes transition from high to low. The CS signal gets activates when INT* is transferred by the interrupts by the driven data transfer scheme which is always performed when desired. The buffer at the output ...
Read MoreHow to create a left-arrow button on a Toolbar on iPhone/iPad?
To create a button on toolbar we'll need to use two different components of iOS and another image that is a back arrow. Before that let's see what those components areToolbar − Toolbar is a native iOS component that is used to display items or toolbar on the bottom of screen.Bar Button item − It is a button that's usually created on a Toolbar or a navigation bar.When a toolbar is created using storyboard, it comes with a Bar button item.Let's start by creating a new project, in the main.storyboard give some background color to the only viewController we have.From ...
Read MoreHow to replace a character in Objective-C String for iPhone SDK?
To replace a character in objective C we will have to use the inbuilt function of Objective C string library, which replaces occurrence of a string with some other string that we want to replace it with.To create a string in objective C we need to write −NSString *str = @"tutori@als";Now we have a choice of replacing characters in this string and creating new one, or modify this same string. In this example we will modify this string and print in the next line.str = [str stringByReplacingOccurrencesOfString:@"@" withString:@""]; NSLog(@”%@”, str);When we run the above code, str is replaced with “tutorials” ...
Read MoreHow to navigate from one view controller to another in iOS?
To navigate from one view Controller to another view Controller in iOS, we need to use Navigation controller. Navigation controller manages a stack of View controller when we go from one view to another view.Navigation from one view controller to another view controller can be done like mentioned below.Step 1 − Create a View controller object.let vc = self.storyboard?.instantiateViewController(withIdentifier: "VC2ViewController") as! VC2ViewControllerIn this step we initialize an object of the type of our another view controller, to which we want to navigate. The identifier variable should be same as the identifier of our second view controller.Step 2 − Navigating to ...
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