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Template parameters and template arguments
https://en.cppreference.com/w/cpp/language/template_parameters
May 07, 2022 · An identifier that names a non-type template parameter of class type T denotes a static storage duration object of type const T, called a template parameter object, whose value is that of the corresponding template argument after it has been converted to the type of the template parameter. All such template parameters in the program of the same type with the …
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Templates - cppreference.com
https://en.cppreference.com/w/cpp/language/templates
Jan 14, 2022 · a concept ( constraints and concepts ) (since C++20) Templates are parameterized by one or more template parameters, of three kinds: type template parameters, non-type template parameters, and template template parameters. When template arguments are provided, or, for function and class (since C++17) templates only, deduced, …
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Parameter pack(since C++11) - cppreference.com
https://en.cppreference.com/w/cpp/language/parameter_pack
Feb 08, 2022 · C++ language Templates A template parameter pack is a template parameter that accepts zero or more template arguments (non-types, types, or templates). A function parameter pack is a function parameter that accepts zero or more function arguments. A template with at least one parameter pack is called a variadic template . Syntax
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Function template - cppreference.com
https://en.cppreference.com/w/cpp/language/function_template
Template arguments of a function template may be obtained from 1. template argument deduction 2. default template arguments 3. specified explicitly, which can be done in the following contexts: 1. 1.1. in a function call expression 1.2. when an address of a function is taken 1.3. when a reference to function is initialized 1.4. when a pointer to me...
Template arguments of a function template may be obtained from 1. template argument deduction 2. default template arguments 3. specified explicitly, which can be done in the following contexts: 1. 1.1. in a function call expression 1.2. when an address of a function is taken 1.3. when a reference to function is initialized 1.4. when a pointer to me...
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Template argument deduction - cppreference.com
https://en.cppreference.com/w/cpp/language/template_argument_deduction
May 05, 2022 · Type template parameter cannot be deduced from the type of a function default argument: template<typename T > void f ( T = 5, T = 7); void g () { f (1); // OK: calls f<int> (1, 7) f (); // error: cannot deduce T f <int>(); // OK: calls f<int> (5, 7) } Deduction of template template parameter can use the type used in the template specialization used in the function call:
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Variable template (since C++14) - cppreference.com
https://en.cppreference.com/w/cpp/language/variable_template
Feb 11, 2022 · C++ language Templates A variable template defines a family of variables or static data members. Syntax template < parameter-list > variable-declaration Explanation A variable template may be introduced by a template declaration at namespace scope, where declaration declares a variable.
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Class template argument deduction (CTAD) (since C++17)
https://en.cppreference.com/w/cpp/language/class_template_argument_deduction
Jan 06, 2022 · Deduction for class templates [] Implicitly-generated deduction guideWhen, in a function-style cast or in a variable's declaration, the type specifier consists solely of the name of a primary class template C (i.e., there is no accompanying template argument list), candidates for deduction are formed as follows: . If C is defined, for each constructor (or constructor …
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Template parameters and template arguments
https://tioj.ck.tp.edu.tw/cppref/en/cpp/language/template_parameters.html
The type of a non-type template parameter may be deduced if it includes a placeholder type (auto, a placeholder for a deduced class type (since C++20), or decltype(auto)). The deduction is performed as if by deducing the type of the variable x in the invented declaration T x = template-argument;, where T is the declared type of the template parameter. If the deduced type is not …
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Explicit (full) template specialization - cppreference.com
https://en.cppreference.com/w/cpp/language/template_specialization
May 05, 2022 · Explicit (full) template specialization - cppreference.com Explicit (full) template specialization C++ C++ language Templates Allows customizing the template code for a given set of template arguments. Syntax template <> declaration Any of the following can be fully specialized: function template class template variable template (since C++14)
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