Re: what is equivalent to template template

[Erik Smith via Digitalmars-d-learn]

You're close.

An `alias` template parameter can be any symbol, including a 
template. But you can't pass in a template as a runtime 
parameter, so having `F f` in your parameters list is wrong 
(there's nothing to pass anyway; you already have the template, 
which is F).


static void call(alias F, A...)(A a) {
F(a);
}

Then instantiate and call the `call` function with the template 
you want:


call!myVariadict(1,2,3);



Works. Thanks!

Re: what is equivalent to template template

[Alex Parrill via Digitalmars-d-learn]

On Tuesday, 3 May 2016 at 21:31:35 UTC, Erik Smith wrote:
C++ has template templates.  I'm not sure how to achieve the 
same effect where (in example below) the template function 
myVariadic is passed to another function.


void myVaridatic(A...)(A a) {}

static void call(alias F,A...)(F f,A a) {
f(a);
}

void foo() {
call(myVaridatic,1,2,3);
}


You're close.

An `alias` template parameter can be any symbol, including a 
template. But you can't pass in a template as a runtime 
parameter, so having `F f` in your parameters list is wrong 
(there's nothing to pass anyway; you already have the template, 
which is F).


static void call(alias F, A...)(A a) {
F(a);
}

Then instantiate and call the `call` function with the template 
you want:


call!myVariadict(1,2,3);

Re: what is equivalent to template template

[ag0aep6g via Digitalmars-d-learn]

On 03.05.2016 23:31, Erik Smith wrote:

 void myVaridatic(A...)(A a) {}


Aside: I think it's "variadic", not "varidatic".



 static void call(alias F,A...)(F f,A a) {


static void call(alias f, A...)(A a) {


 f(a);
 }

 void foo() {
 call(myVaridatic,1,2,3);


call!myVaridatic(1, 2, 3);


 }

what is equivalent to template template

[Erik Smith via Digitalmars-d-learn]

C++ has template templates.  I'm not sure how to achieve the same 
effect where (in example below) the template function myVariadic 
is passed to another function.


void myVaridatic(A...)(A a) {}

static void call(alias F,A...)(F f,A a) {
f(a);
}

void foo() {
call(myVaridatic,1,2,3);
}