Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
In a nutshell, placement new allows you to "construct" an object on memory that's already allocated to a given variable. This is useful for optimizations as it is faster to not reallocate and reuse the same memory that is already assigned to it. It can be used as follows −new (address) (type) initializerWe can specify an address where we want a new object of the given type to be constructed. Example#include using namespace std; int main() { int a = 5; cout
To create a sticky navbar, use the position: sticky; property. You can try to run the following code to create a sticky navbar, ExampleLive Demo ul { list-style-type: none; position: sticky; overflow: hidden; top: 0; width: 100%; } li { float: left; ... Read More
GNU C++ compiler, g++, provides extensions to the C++ language. The difference between the two options is whether these GNU extensions that might violate the C++ standard are enabled or not. Note that some extensions can still be in effect when using -std = c++11, if they don't violate the standard.The list of extensions to the C++ language in GNU compiler can be found here − https://gcc.gnu.org/onlinedocs/gcc/C_002b_002b-Extensions.html
C++11 is the modern C++ standard published in 2011. This brought many major extensions and improvements to the existing language. It was approved by International Organization for Standardization (ISO) on 12 August 2011 and replaced C++03.C++11 was also known as C++0x. This is because, For the next revision, it was supposed that the next Standard after would be done by 2008, but since it was uncertain, it was named C++0x, where the x stood for either 8 or 9. Though planning shifted and it is now called C++11. So, C++0x was the name for the standard before it was published. ... Read More
You can't access a local variable once it goes out of scope. This is what it means to be a local variable. Though, Let us look at an example where you MIGHT be able to access a local variable's memory outside its scope.Example#include int* foo() { int x = 3; return &x; } int main() { int* address = foo(); cout
Singleton design pattern is a software design principle that is used to restrict the instantiation of a class to one object. This is useful when exactly one object is needed to coordinate actions across the system. For example, if you are using a logger, that writes logs to a file, you can use a singleton class to create such a logger. You can create a singleton class using the following code −Example#include using namespace std; class Singleton { static Singleton *instance; int data; // Private constructor so that no objects can be created. ... Read More
To set up different speed curves with transition-timing-function, you can try to run the following codeExampleLive Demo div { width: 100px; height: 100px; background: red; transition: width 4s; } #effect1 { transition-timing-function: linear; } #effect2 { transition-timing-function: ease-in; } #effect3 { transition-timing-function: ease-out; } div:hover { width: 250px; } Transition Effect Hover over the div elements and see the transition effect and the speed: linear effect ease-in effect ease-out effect
To set the name of the CSS property the transition effect is, use the CSS transition-property.In the below example, we have set the property as width and set the duration as well:ExampleLive Demo div { width: 150px; height: 150px; background: blue; transition-property: width; transition-duration: 3s; } div:hover { width: 250px; } Heading One Hover over the below box to change its width.
Use the transition-duration property to set the duration of transitionExampleLive Demo div { width: 150px; height: 150px; background: blue; transition-property: height; transition-duration: 2s; } div:hover { height: 200px; } Heading One Hover over the below box to change its height.
Use the transition-delay property to set a delay for the transition effect with CSS. You can try to run the following code to set a 1-second delay of transition:ExampleLive Demo div { width: 150px; height: 150px; background: blue; transition: width 3s; transition-delay: 2s; } div:hover { width: 350px; } Heading One Hover over the below box to change its width. It begins with a delay of 2 seconds.