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Using same alias for multiple namespaces


Using same alias for multiple namespaces

By : Filipe Baptista
Date : November 28 2020, 01:01 AM
like below fixes the issue Is it possible to somehow use the same using alias for multiple namespaces, for which I know they don't have overlapping class names, in C#?
code :


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Can we alias a class name the way we do in namespaces?

Can we alias a class name the way we do in namespaces?


By : joshieecs
Date : March 29 2020, 07:55 AM
it helps some times Can we alias a class name the way we do in namespaces? , Simple:
code :
typedef LONGNAME LN;
class Car
{
public:
    typedef std::vector<Wheel> WheelCollection;

    WheelCollection wheels;
};
How to alias namespaces in classes

How to alias namespaces in classes


By : Gavin
Date : March 29 2020, 07:55 AM
I wish this helpful for you I have a class in my project, for example, , This is the syntax:
code :
using MyAlias = BrightCompany.BigProjects.MyBigProject.ApplicationCodeFolder;
using BrightCompany.BigProjects.MyBigProject.ApplicationCodeFolder;

namespace BrightCompany.BigProjects.MyBigProject
{
    public class MyBigProjectsClassABC
    {
        private void ABC()
        {
            string tooLong = MyBigProjectsClass.returnStringMethod();
        }
    }
}
Specializing templates in namespaces - is namespace alias really an alias?

Specializing templates in namespaces - is namespace alias really an alias?


By : Xe Help
Date : March 29 2020, 07:55 AM
it helps some times Yes, a namespace alias is really an alias. The error is occurring because you're declaring std_specialize as an alias for either std or std::tr1 and then trying to declare a namespace with the same name. If it were legal, after that declaration, what would std_specialize refer to, std(or std::tr1) or the new namespace containing your hash specialization?
What you probably want to do is
code :
namespace std {
#if __cplusplus < 201103L
namespace tr1 {
#endif

template<>
struct hash<my_type> { ... };

#if __cplusplus < 201103L
}
#endif
}
Declaring Namespaces Alias

Declaring Namespaces Alias


By : vijay goyal
Date : March 29 2020, 07:55 AM
around this issue PHP manual:
several alias namespaces in if-statement

several alias namespaces in if-statement


By : mbhaumik
Date : March 29 2020, 07:55 AM
Hope this helps The namespace alias that you define is meant for telling the compiler which namespace to use when looking up for symbols at compile time.
What's the problem ?
code :
   if(dim == 1) {
        namespace poissonProblem = poissonProblem1D;
    }
namespace poissonProblem1D { 
    class X { 
    public: 
        X(int c) {}   // constructor only with int parameter
        virtual ~X() {} // virtual destructor
    };  // only a constructor with int is allowed
}

namespace poissonProblem2D { 
    class X { 
    public: 
        X() {}   // only constructor without argument
        ~X() {}  //  non virtual destructor
    };  // only a constructor with int is allowed
}
poissonProblem::X  x(2);  
#define dim 2
#if dim==2
        namespace poissonProblem = poissonProblem2D;
#elif dim==1
        namespace poissonProblem = poissonProblem1D;
#elif dim==3
        namespace poissonProblem = poissonProblem3D;
#endif
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