Nov 20, 2012 · It should be: template<class T> bool MutableQueue<T>::empty() const { scoped_lock lock(mutex); return queue.empty(); }.
Nov 26, 2020 · Although I provide a default value for non-type template parameter and expect it to be seen and used by compiler somehow. What do I miss here ?
Aug 13, 2021 · my::Set in your code is an alias template, and class template argument deduction for alias templates is a new feature of C++20: ...
Jun 11, 2020 · 1 Answer 1 ... Much like a class template (in a non-deduced, C++17, context), you need to explicitly provide a template argument list when using ...
Jan 12, 2021 · An alias template may indeed have default template arguments, and it is legal to have default template arguments to template parameters that are ...
Oct 23, 2016 · 1 Answer 1 ... Simply put, Node<> and List<> are different templates. So you need to forward the template parameter from List to Node . ... Thank ...
Nov 17, 2021 · The error from clang is: error: alias template 'ints' requires template arguments; argument deduction only allowed for class templates . – mch.
Sep 23, 2014 · And I always get an error saying "Node' : use of class template requires template argument list. " Thank You in advance for help.
Jun 28, 2016 · 1 Answer 1 ... You need to decide what type of stack you are going to have here. Stack<int> s;. This will make a stack where type T is int. You ...
type is declared as alias template, then template arguments are required here. Because the default arguments are declared, so just add <> for it, e.g.
Apr 22, 2014 · 1 Answer 1 ... Members of a template class are themselves templates parameterized by the parameters of their template class. When such a member is ...
Mar 29, 2013 · 'std::pair' : use of class template requires template argument list [closed] ... This question is unlikely to help any future visitors; it is only ...
Missing: alias | Show results with:alias
Aug 1, 2019 · Don't confuse c++ tempaltes with java generics, they are really very different concepts. You cannot have a vector of templates, because ...
Jan 22, 2016 · Before the compiler sees Array<T>:: , it doesn't know that you are defining a member of the class template, and therefore you cannot use the ...
Missing: alias | Show results with:alias
Mar 7, 2013 · Secondly, those definitions cannot be put in a .cpp file, because the compiler won't be able to instantiated them implicitly from their point of ...
Dec 7, 2016 · CTAD for alias templates is only supported where the right-hand side of the alias template is a simple-template-id (of the form maybe::stuff:: ...
May 28, 2020 · Starting with C++17, you do not need the template keyword between a :: and a member template specialization name in certain contexts that ...
Apr 21, 2014 · If so you can provide default values in the template template argument: template< ..., template <typename, typename = unsigned, int = 42> class ...
Mar 4, 2024 · No, leaving out the template argument list on a class or alias template's name has a different meaning than an empty template argument list ...
Oct 27, 2021 · None of those functions should or can depend on any template parameter. The only thing in your code depending on a template parameter is ...
Jun 4, 2022 · They should be invalid since the explicit instantiation with the same template arguments and the usage of type alias has errors. Note in first ...
Nov 10, 2021 · invalid use of template-name 'boost::asio::strand' without an argument list ... h:72:5: error: invalid use of template-name ... Required, but never ...
Aug 19, 2019 · but it doesn't compile: 'Base2': use of alias template requires template argument list . Is partial deduction possible somehow? If it is not ...
Sep 19, 2023 · No, as alias templates are just an alias for a type, it is by design not allowed to write explicit deduction guide specifically for an alias ...
Apr 18, 2023 · That each specialization of the two templates with the same list of template arguments happen to result in something referring to the same type ...
Jun 9, 2020 · Passing a template name as a class parameter causes error on use in variadic expansion - Have I found an MSVC Compiler bug? ... How can you check ...
Why alias a template parameter in C++ standard containers?
stackoverflow.com › questions › why-ali...
Jul 26, 2020 · "I was wondering why the convention of assigning a type alias to a template type is used here?" - For a definitive answer you'd need to ask the ...
Aug 25, 2021 · ... list of template parameters twice. Is there ... Can I use template aliases as template template parameters? ... Is there a standard which requires ...
Nov 10, 2020 · ... list }; int ... Use of class template 'X' requires template arguments; argument ... Can template parameter deduction be used in class data members?
Apr 20, 2013 · Complex is a template class. So it needs a template argument when constructed. Complex<int> complexA(10, 5); ^^^^.
Jun 29, 2020 · ... template line. They both need those, and the usage of the alias must provide any template arguments it requires. @bipll already showed this.
Mar 14, 2018 · Not exactly what you asked but not so different... But require a little work. You can solve with a struct, foo , with a double layer of ...
Feb 19, 2020 · Quite simply, the forward declaration needs the default parameters. Simply look at it this way, in simplified form: template<class T> A; ...
Nov 26, 2020 · Unable to understand it's cause. (IDE: Eclipse) I'm trying to build an LRU cache (a very basic implementation), I've used a list and 2 maps ...
Missing: alias | Show results with:alias
Apr 13, 2017 · I stumbled over some behaviour regarding template argument deduction in context with alias templates, I am not understanding.
Mar 9, 2021 · Or add a template function to your visitor to handle all types you might want to use. Share.
Jan 10, 2014 · You have a template template parameter. You must pass a template as its argument. You instead pass a template instantiation as its argument ...
May 31, 2018 · error: use of class template 'S' requires template arguments; argument deduction not allowed in function return type. Quite easy to fix, it ...
Sep 12, 2016 · Alias template for reference type passed as template template argument in SFINAE context ; // (#1) template ; class T ; using reference_t ...
Jul 16, 2013 · bug.cpp:10:16: error: template argument for template template parameter must be a class template or type alias template : base<derived, T>() ^ ...
Sep 6, 2011 · A template-argument for a template template-parameter shall be the name of a class template or an alias template [...]. However, alias templates ...
Apr 25, 2017 · This is CWG issue 1286. The question is: are alias and test equivalent? There used to be an example in [temp.type] which suggested that y ...
Jan 14, 2021 · @ecatmur does this mean there is no solution? because a list of types can't be a primary template. As I see it's not possible to use it the same ...
May 29, 2016 · ... alias: 'MyPanel': use of class template requires template argument list. OK, so I changed the alias to: template <typename T> using ...
Feb 27, 2018 · When you separate method definitions from their declarations for a templated class, you have to include the same template declaration on ...
Jun 3, 2014 · using type = C<double> is a type alias for a class template; that class "loses" the right to use default template parameters, since it's passed ...
Feb 17, 2015 · test.cpp:5:23: error: template argument for template template parameter must be a ...
May 2, 2018 · It's expected behavior. Well, depends on what you expect I guess. Class template argument deduction only applies in the context of using a ...
May 18, 2015 · Why wouldn't you just evaluate whatever template parameter you're passing into an alias template in an enable_if_t or conditional_t statement?
Jul 8, 2011 · A typedef template is itself an alias; it cannot be specialized. This choice would allow: deduction on typedef template function parameters (see ...