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Questions tagged [class-template]

Anything related to C++ class templates, i.e. classes whose definition depends on some parameter according to templates definition rules.

Anything related to C++ class templates, i.e. classes whose definition depends on some parameter according to templates definition rules.

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Return a class template with value template arguments from function

Suppose I have a simple template class: template class ConsecutiveMatcher { public: bool operator () (ElementType lhs, ElementType rhs) { return lhs == Element && rhs == Element; …
Felix Dombek
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Class Template + Function Template

when I tried to create a template class as follows: template class Variant { public : std::string toString(); // var.toString() template std::string toString(); // var.toStrint(); protected: …
hhamm
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How to create a 2D array in C++ using this specific container

I'm trying to port a int a[][] from Java to C++. I'm using this class as a container ArrayRef for ints because it handles references, and the project uses it extensively. In the AbstractReader class I declared const ArrayRef…
Andres
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Can C++ class templates take method names as template parameters?

Just like the title asks, can C++ class templates take method names as template parameters? For instance, template class Foo { public: void T(int bar); };
Qix - MONICA WAS MISTREATED
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Template error in list

I am trying to implement Koch's Snowflake. I have made a generic list, for practice sake, but I am having some issues. #include #include #include #include template class Node { public: T…
Kyle Shrader
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Non type template argument compiles in msvc but not in clang and gcc

I am learning about non-type template parameters using C++ Primer 5th edition and came to know that: A nontype parameter may be an integral type, or a pointer or (lvalue) reference to an object or to a function type. An argument bound to a nontype…
Alex
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How to restrict generic class method template parameter to certain types?

I have checked out std::enable_if to conditionally compile a member function However it doesn't work for me. I need to restrict T of a class method to some types. template || is_same_v
Kok How Teh
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Which members are inherited from the template parameter

If we have a class template like template class Field { .... }; Now, if I declared an object of class Field as Field velocityField; So which member functions is inherited form vector to my velocityField
Mohamed Ouda
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How to invoke Single argument constructor in this program involving class template?

This is the code I wrote to get started with class templates. #include using namespace std; template class Complex { T *real,*imag; public: Complex(T a) { real=new T; imag=new T; *real=a; *imag=0; …
hcoder
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Linked List Function Implementation Help: insertEnd C++

so I implemented the definition for a function insertEnd which inserts a linked list node at the end of a linked list. For the most part, it seems to work on its own, but I seem to have issues when using it in other functions (such as concatenating…
Crowning
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Virtual Method calling another virtual method in a templatized class

I've been reading different questions on this topic, but haven't been able to find one that quite answers what I'm looking for. Here's the pattern of code that I have: class Base { public: virtual void foo(int) const {...} } template
Daniel Skarbek
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C++ Class Templates Inheritance Call Constructor/Destructor

I have the following class. template class DivideConquerTask { public: DivideConquerTask() = delete; DivideConquerTask(int problemSize, int branchingSize); virtual ~DivideConquerTask(); DivideConquerTask(const DivideConquerTask& other) =…
UmaN
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How does std::unique_ptr set the other pointer to null when moving?

When a move happens, usually a class sets the other's pointer to null, and this is the case with std::unique_ptr. The assignment operator is templated so that you can move unique_ptrs to different types (i.e derived classes). My question is: How can…
Zebrafish
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C++20 Pass Familiar Template lambda as Class Template to Template Parameter of a Class

Consider passing a callable class template as a template parameter to some class. Three approaches as below but only functor one works. The naive template function failed because it cannot serve as a class template; However, why the C++20 familiar…
Nkk
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C++ class template as function return type

I'm working on a little project to understand how C++ templates work. Basically, I have something like: class Base{ public: MyOperation operate(Base x){ return MyOperation(x); } //error here }; //... template class…
user2440822
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