simple (I think) eponymous template question ... what is proper idimatic way ?

[james.p.leblanc]

On Wednesday, 18 August 2021 at 06:53:51 UTC, Tejas wrote:

> void funcTemplate(T:int)(T a){
>      writeln("argument is int");
> }
>
> void funcTemplate(T : long)(T a){
>      writeln("argument is long integer");
> }
>
> void main(){
>      int a;
>      long b;
>      func(a);
>      func(b);
>
>      funcTemplate(a);
>      funcTemplate(b);
>
> }
>
> ```


Domninikus, Tejas, and All,

I see that I had been (stupidly) omitting the exclamation point
after **"isIntegral"** in my clumsy attempts to use the traits ...
thanks for your clear example helping me identify my error.

Also, thanks for mentioning the words **"template 
specialization"** , I did
not know what to call the use of **":"** in templates.

Now, I have a search term I can use to learn more ...and find it 
is in Phillippe
Signaud's informative "D-templates-tutorial".

Thanks again,
James

PS Also, I am enjoying, a entertaining and educational tutorial 
that Phillippe
has linked in his tutorial.  Other may learn from this as well:

http://www.semitwist.com/articles/EfficientAndFlexible/SinglePage/