templates

Why can I evaluate a function receiving a std::pair at compile-time, but not assert it? [duplicate]

依然范特西╮ 提交于 2021-02-11 14:13:59
问题 This question already has answers here : constexpr function parameters as template arguments (4 answers) C++11 constexpr function pass parameter (3 answers) Closed 12 months ago . I wrote a function that receives a variadic number of std::pairs. It takes the pairs, subtracts the 2nd element against the 1st element of each pair, and returns a tuple of the newly generated values like this: #include <tuple> #include <utility> template<typename... pairs> inline constexpr auto foo(pairs&& ...p)

Display a form field i.e., a choice field of form in the template django

只愿长相守 提交于 2021-02-11 13:14:48
问题 I've have forms.py file in that i have a choice field which i've to display it in the template.html forms.py Choices = [('Yelp',)] class UtilitiesForm(forms.Form): api_select = forms.MultipleChoiceField(widget=forms.Select(), choices=Choices) text_url = forms.CharField() template.html {% block body_content %} <form action="/utilities/fetch-data/" method="post" id="utitliy__form"> <div class="form-row"> <label>Select an API</label> {{ form.api_select }} </div> </form> {% endblock body_content

Display a form field i.e., a choice field of form in the template django

巧了我就是萌 提交于 2021-02-11 13:14:27
问题 I've have forms.py file in that i have a choice field which i've to display it in the template.html forms.py Choices = [('Yelp',)] class UtilitiesForm(forms.Form): api_select = forms.MultipleChoiceField(widget=forms.Select(), choices=Choices) text_url = forms.CharField() template.html {% block body_content %} <form action="/utilities/fetch-data/" method="post" id="utitliy__form"> <div class="form-row"> <label>Select an API</label> {{ form.api_select }} </div> </form> {% endblock body_content

Display a form field i.e., a choice field of form in the template django

点点圈 提交于 2021-02-11 13:14:20
问题 I've have forms.py file in that i have a choice field which i've to display it in the template.html forms.py Choices = [('Yelp',)] class UtilitiesForm(forms.Form): api_select = forms.MultipleChoiceField(widget=forms.Select(), choices=Choices) text_url = forms.CharField() template.html {% block body_content %} <form action="/utilities/fetch-data/" method="post" id="utitliy__form"> <div class="form-row"> <label>Select an API</label> {{ form.api_select }} </div> </form> {% endblock body_content

Display a form field i.e., a choice field of form in the template django

安稳与你 提交于 2021-02-11 13:14:15
问题 I've have forms.py file in that i have a choice field which i've to display it in the template.html forms.py Choices = [('Yelp',)] class UtilitiesForm(forms.Form): api_select = forms.MultipleChoiceField(widget=forms.Select(), choices=Choices) text_url = forms.CharField() template.html {% block body_content %} <form action="/utilities/fetch-data/" method="post" id="utitliy__form"> <div class="form-row"> <label>Select an API</label> {{ form.api_select }} </div> </form> {% endblock body_content

Foreach on enum types in template

和自甴很熟 提交于 2021-02-11 13:03:53
问题 enum MyEnum { type1, type2, type3 } public void MyMethod<T>() { ... } How to make forach on enum to fire MyMethod<T> on every enum? I try something with foreach (MyEnum type in Enum.GetValues(typeof(MyEnum))) {...} But still don't know how to use this type inside foreach with MyMethod<T> as T 回答1: Is this what you are trying to do? class Program { static void Main(string[] args) { EnumForEach<MyEnum>(MyMethod); } public static void EnumForEach<T>(Action<T> action) { if(!typeof(T).IsEnum)

Returning a derived class of a virtual class in C++

断了今生、忘了曾经 提交于 2021-02-11 12:58:52
问题 here's my problem. I have a template abstract class RandomVariable with pure virtual function operator()() template<T> class RandomVariable<T> { public: virtual T operator()() = 0; /* other stuff */ protected: T value; } I also have a template abstract class Process with pure virtual function operator()() template<T> class Process<T> { public: typedef std::pair<double, T> state; typedef std::list<state> result_type; virtual result_type operator()() = 0; /* other stuff */ protected: result

Returning a derived class of a virtual class in C++

我的梦境 提交于 2021-02-11 12:58:07
问题 here's my problem. I have a template abstract class RandomVariable with pure virtual function operator()() template<T> class RandomVariable<T> { public: virtual T operator()() = 0; /* other stuff */ protected: T value; } I also have a template abstract class Process with pure virtual function operator()() template<T> class Process<T> { public: typedef std::pair<double, T> state; typedef std::list<state> result_type; virtual result_type operator()() = 0; /* other stuff */ protected: result

How to create active links with Mustache?

三世轮回 提交于 2021-02-11 12:31:38
问题 How to create active clickable links with Mustache? I prefer to use javascript version of Mustache for this. In other words: I want to autolink user generated text content with javascript/mustache (=linkify). Template {{#.}} <div>{{.}}</div> {{/.}} Data [ 'User content, like regular text.', 'User content with text and links http://www.google.com or secure https://www.google.com' ] Output I'm looking for <div>User content, like regular text.</div> <div>User content with text and links <a href=

Partial specialization for one method in the class

倾然丶 夕夏残阳落幕 提交于 2021-02-11 12:23:23
问题 I have a template matrix class. I try to implement the size (always square) as a template parameter. template< // Type of data typename type_t, // dimension of the matrix 4 -> 4x4 std::size_t dim_t, // I don't want a matrix of non numeric value typename = typename std::enable_if_t< std::is_arithmetic_v< type_t >, type_t > > class Matrix final { // .... } With this code, I would like to be able to make a different method for different sizes of matrix. Because some method force me to take it