logo
down
shadow

C++ Class Templates (Queue of a class)


C++ Class Templates (Queue of a class)

By : David W
Date : November 22 2020, 07:01 PM
To fix this issue Ok, so I have my basic linked Queue class with basic functions such as front(), empty() etc.. and I have transformed it into a template. Now, I also have a class called Student. Which holds 2 values: Student name and Student Id. I can print out a student with the following code.. , Based on the code you show here, the following does not work:
code :


Share : facebook icon twitter icon
templates: parent class member variables not visible in inherited class

templates: parent class member variables not visible in inherited class


By : user3265453
Date : March 29 2020, 07:55 AM
Does that help This is because the template parent of a template class is not instantiated during the compilation pass that first examines the template. These names appear to be non-dependent on the particular template instantiation, and therefore the definitions need to be available. (If you never look at the definition of arrayListType, then reading the code of unorderedArrayListType it would appear the list and length need to be some sort of globals.)
You'll need to tell the compiler explicitly that the names are in fact dependent on the instantiation of the parent.
C++ templates: Calling member function of derived template class from base class

C++ templates: Calling member function of derived template class from base class


By : Mike Nosov
Date : March 29 2020, 07:55 AM
I wish this help you As C++ is a strongly typed language, you can't call them directly this way, since the compiler would not be able to figure out what the return value of the function is.
What you need to do is, map it all to a common interface. The question you should ask is: what are the information i realy need from the CelField? Maybe all you need is the string-representation of the value, then you could do something like this:
code :
class CellBase
{
    virtual std::string getData()=0;
};

template<typename T>
class CellField : public CellBase
{
    std::string getData(){//some implementation}
};
c++ function cannot derive template for child class of base class with templates

c++ function cannot derive template for child class of base class with templates


By : Gaelle
Date : March 29 2020, 07:55 AM
I hope this helps . (using bitset = boost::dynamic_bitset)
Your bitstring_individual is not the same as individual, and the compiler rightfully does not recognize them as such. One inherits the other, yes, but that does not make them interchangeable everywhere - in particular when used as template arguments.
code :
using bitstring_individual = individual<bitset, bitset>;
Making a function that creates an object of a class OR child class using templates

Making a function that creates an object of a class OR child class using templates


By : ganug916
Date : March 29 2020, 07:55 AM
it helps some times The problem here is the braced-init-list {...}, that doesn't work with type deduction.
One possible solution is to be explicit about it:
code :
reassign_menu<DescMenu>(
    "Shop", "Select something you want to buy", 
    std::vector<std::string>{"Cereal", "Bowl", "Knife", "Gun", "Steak"}
).run();
DescMenu(std::vector<std::string> options, std::string title, std::string info,
         std::string prompt = "Enter: ") : ...

template<typename MenuTy, typename... Args>
const Menu& reassign_menu(std::initializer_list<std::string> il, Args... args) {
    m_menu = std::make_unique<MenuTy>(il, args...);
    return *m_menu;
}

...

reassign_menu<DescMenu>({"Cereal", "Bowl", "Knife", "Gun", "Steak"},
    "Shop", "Select something you want to buy").run();
Calling derived class function from base class with templates without virtual

Calling derived class function from base class with templates without virtual


By : Chipp
Date : March 29 2020, 07:55 AM
I hope this helps you . I need to generate some members/methods of a class with a script. I'm trying to break up this class in two, with base class being generated members, and derived class having hand coded members. However, I'm getting stuck in figuring out how to call derived member function D::f2() from the base class B::f1(). , If you really really really want to do it:
Related Posts Related Posts :
  • C++ help and questions
  • combinations algorithm
  • undefined reference
  • C++ undefined reference
  • Output unicode strings in Windows console app
  • Memory management in Qt?
  • File with .cpp,v extension
  • Using LZMA SDK in C++
  • C++ arithmetic with pointers
  • How to get values of attributes on a XML file using C++?
  • What is a thread pool in C++ and how it is implemented?
  • pthreads and C++
  • Virtual function
  • Windows/C++: how to use a COM dll which is not registered
  • Hash Table v/s STL map in C++
  • If-else-if versus map
  • C++ cin questions
  • how to do virtualization?
  • C/C++ definitions of functions
  • read access violation error
  • how to find the first word in the sentence having 'w' in it
  • How to allocate more memory for a buffer in C++?
  • Deleting a node in a circular linked list c++?
  • How to run Qt from command line in windows
  • C++ word to bytes
  • What's wrong with these pointer initialization
  • Access Violation Using memcpy or Assignment to an Array in a Struct
  • Wrong operator() overload called
  • Subtractively sweep a solid through another in python (or C++)
  • boost ublas: rotate 2d vector
  • How can a Windows program temporarily change its time zone?
  • small & readable scheme interpreter in C++?
  • Cannot change the height of a combo box in the VS Dialog Editor
  • Access reading error when using class member variable
  • How to tell if two exe's are the same code-wise?
  • Modifying an old Windows program not to call exit after a keypress without source access
  • What is name lookup mechanism?
  • What does the C++ compiler error "looks like a function definition, but there is no parameter list;" mean?
  • Why does this crash with access violation to 0xcccccc...?
  • How to find out how namespace got polluted?
  • What is the _REENTRANT flag?
  • Managing many objects at once
  • How to create ActiveX DLL in Visual C++
  • Generic allocator class without variadic templates?
  • Comparation in JNI
  • Using a function with reference as a function with pointers?
  • How to initialize an unsigned long long type?
  • How to practically customize IE context menu?
  • Trying to Create a ToolBar with an ImageList, not working
  • How does the destructor know when to activate itself? Can it be relied upon?
  • Conway's Game of Life - C++ and Qt
  • Accessing any structs members at run-time
  • Including #includes in header file vs source file
  • How does switch compile in Visual C++ and how optimized and fast is it?
  • How to override nested C++ objects methods?
  • penalty for "inlined" classes
  • C++ Library for implementing a web services api over legacy code?
  • C++-Singleton class
  • Floating point precision in Visual C++
  • Compiler error when overriding virtual methods
  • shadow
    Privacy Policy - Terms - Contact Us © 35dp-dentalpractice.co.uk