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  • In C++, “std” is a namespace that contains many of the Standard Library components that are provided by the C++ Standard Library. It is a way to organize and group together the various functions, classes, and objects that are defined in the Standard Library.
    The “std” namespace is used to avoid the naming conflicts and to provide a clear distinction between the Standard Library entities and user-defined entities.
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  • Because these tools are used so commonly, it’s popular to add “using namespace std” at the top of your source code so that you won’t have to type the std...
  • An unnamed namespace can be used to ensure names have internal linkage (can only be referred to by the current translation unit).
  • Having a local variable called count means that using namespace std won't enable you to use count instead of std::count.
  • In this post, we will look at why "using namespace std;" is regarded problematic and discuss the best practices for namespace management in C++.
  • To use a book from std Section ... If you find it tedious to specify the section name every time to borrow book from std section, you can say
  • Since using namespace std brings all the identifiers from the std namespace into the global namespace, this can create naming conflicts with other...
  • Identifiers outside the namespace can access the members by using the fully qualified name for each identifier, for example std::vector<std::string> vec;, or else...
  • There are a few ways to resolve this dilemma i.e specify exact namespace without littering code with std keywords. Consider using typedefs typedefs save us from...
  • When you don't use the std namespace, the computer will try to call cout or cin as if it weren't defined in a namespace (as most functions in your codes).
  • This example shows how to use a namespace to create a class that already has been named in the std namespace.