It just means the template should use the default parameter(s). For example: template <int N = 10> class X { }; X<> x; // this is an X<10> Clearly, it’s only possible when all the template parameters have defaults (or for variadic templates that have no mandatory parameters – see below)…. For boost::tokenizer specifically, the … Read more
In the main file, use <script> to load the Javascript file x-counter.js. In the Javascript file, use fetch() to load the HTML code x-counter.html. In the HTML file, use <link rel=”stylesheet”> to load the CSS file x-counter.css. CSS file : x-counter.css button, p { display: inline-block; color: dodgerblue; } HTML file : x-counter.html <link rel=”stylesheet” … Read more
Does it matter if it’s .tpp or any other extension? And why not use a .cpp? It does not matter what the extension is, but don’t use .cpp because it goes against conventions (it will still work, but don’t do it; .cpp files are generally source files). Other than that it’s a matter of what … Read more
Simply call the block: {% if self.foo() %} – {% endif %}
The file template creation process did not change in Xcode 5 so any information you found for Xcode 4 should also work in Xcode 5. But to answer your question, you have to create a custom file template. Duplicate one of Apple’s file templates, which are in Xcode’s application bundle. The iOS file templates are … Read more
Default template arguments are not part of the signature of a template (so both definitions try to define the same template twice). Their parameter types are part of the signature, however. So you can do template <class T> class check { public: template< class U = T, typename std::enable_if<std::is_same<U, int>::value, int>::type = 0> inline static … Read more
Templates provide an advantage when you want to perform the same action on types that can be different. A simple example: template <typename T> T foo(const T& a, const T& b) { return a + b; } You can use overloading when you want to apply different operations depending on the type: struct Foo{ void … Read more
TL;DR There are several ways to get different run-time behavior dependent on a template parameter. Performance is usually equal, so flexibility and maintainability are the main concern. In all cases, the various thin wrappers and constant conditional expressions will all be optimized away on any decent compiler for release builds. Below a small summary with … Read more
David Joyner had the history, here is the reason. The problem when compiling B<T> is that its base class A<T> is unknown from the compiler, being a template class, so no way for the compiler to know any members from the base class. Earlier versions did some inference by actually parsing the base template class, … Read more
Set the user name as data-username attribute to the button and also a class: HTML <input type=”button” name=”theButton” value=”Detail” class=”btn” data-username=”{{result[‘username’]}}” /> JS $(document).on(‘click’, ‘.btn’, function() { var name = $(this).data(‘username’); if (name != undefined && name != null) { window.location = ‘/player_detail?username=” + name; } }); EDIT: Also, you can simply check for undefined … Read more