The statement using namespace std is generally considered bad practice. The alternative to this statement is to specify the namespace to which the identifier belongs using the scope operator(::) each time we declare a type. Example 1: CPP. Lire la suite

In your code, you've explicitly added the line using namespace std; , which lets you use anything from the standard namespace without using the std:: prefix. Thus you can refer to std::string (the real name of the string type) using the shorthand string since the compiler knows to look in namespace std for it. Lire la suite

Declaring namespaces and namespace members

Typically, you declare a namespace in a header file. If your function implementations are in a separate file, then qualify the function names, as in this example. A namespace can be declared in multiple blocks in a single file, and in multiple files. Lire la suite

Most Linux distributions set a system wide $PATH (applies to all users) at /etc/profile where any change made, will apply to all users. Once the user is logged in and opens a terminal, this will start an interactive, non-login shell. Lire la suite

Contact Card Support in WhatsApp (VCard) Beta

You can now send and receive contact cards, also known as VCards or VCF (Virtual Contact Files), via WhatsApp! Contact cards let people easily share and add new contacts to their phone book. Lire la suite

On your Android phone or tablet, open the Contacts app . Select an option. Delete. Lire la suite

App Cannot Be Verified/Downloaded – Why Not? This is likely because Apple has revoked the app certificate, as they do with most unofficial content. The developers are probably updating it so just wait a couple of hours and try again – it should work. If not, delete it and reinstall it. Lire la suite

Activation Lock is enabled automatically when you turn on Find My iPhone. … Even if you erase your device remotely, Activation Lock can continue to deter anyone from reactivating your device without your permission. All you need to do is keep Find My iPhone turned on, and remember your Apple ID and password.” Lire la suite

Google has released its latest big update called Android 11 “R”, which is rolling out now to the firm's Pixel devices, and to smartphones from a handful of third-party manufacturers. Lire la suite

Apple is also rolling out new betas of watchOS 8.4, tvOS 15.3, and more. Update: The latest betas of iOS 15.3, watchOS 8.4, tvOS 15.3, and iPadOS 15.3 are now rolling out to public beta testers as well. Today's new release of iOS 15.3 beta 2 is available to developers via an over-the-air update in the Settings app. Lire la suite