Function Template for Dynamic Parameter

[Timoses]

On Sunday, 1 July 2018 at 09:46:32 UTC, vino.B wrote:
> All,
>
>    Request your help, the D document states that "Template 
> functions are useful for avoiding code duplication - instead of 
> writing several copies of a function, each with a different 
> parameter type, a single function template can be sufficient" 
> which mean we can passing any type of parameter using function 
> template, similarly who we we pass in any number of parameter 
> of any type(dynamic parameters) , like in python
>
> Python
>
> def myfunc(*arg)
> def myfunc(**kwargs) // multiple key-value
> def myfunc(*args, **kwargs): mix
>
> Do we have any thing similar to the above python in D
> void (func(T)( T *args) // Example
>
>
> Examples:
> void func(T)(T x)
> {
>     writeln(x);
> }
> void main()
> { func("x");  // pass a string }
>
>
> void func(T)(T n3)
> {
>     writeln(n); // where n = 3 parameters (1, string, char)
> }
>
> void func(T)(T n2)
> {
>     writeln(n); // where n = 3 parameters (1, string)
> }
>
> void func(T)(T n1)
> {
>     writeln(n); // where n = 3 parameters (1 or string or char)
> }
>
> From,
> Vino.B

Perhaps https://dlang.org/spec/template.html#variadic-templates

     void func(T ...)(T args)
     {
         static assert(T.length <= 3);

         static assert(is(T[0] == int)); // 1

         pragma(msg, T.stringof);
         foreach (arg; args)
         {
             writeln(arg);
         }
     }

     void main()
     {
         func(3, "s", 1.3);
         //func(1.3); // error, first argument is not an int, see 
// 1
     }