inner templates?

[Kirk McDonald]

dennis luehring wrote:
> hi
> 
> i've try to write an template wich calculates e
> 
> ok here it is - but wait i need a helper template to reduce the 
> interface to my needs (just to adjust the precision) - is there any way 
> getting rid of these helper template (maybe an inner-template or 
> something)?
> 
> -- 
> import std.stdio;
> 
> template e_help(double p, double s, double f, int n)
> {
>   static if( s > p )
>     const e_help = e_help!(p, s/n,f+s/n,n+1);
>   else
>     const e_help = f;
> }
> 
> // this is the interface i want - but without the e_help template
> template e(double p = 1e-14)
> {
>   const e = e_help!(p, 1, 1, 1);
> }
> 
> void main()
> {
>   writefln("e: ", e!());
> }
> -- 
> 
> ciao dennis

Default arguments should do it in this case:

template e(double p=1e-14, double s=1, double f=1, int n=1)
{
   static if( s > p )
     const e = e!(p, s/n, f+s/n, n+1);
   else
     const e = f;
}

-- 
Kirk McDonald
http://kirkmcdonald.blogspot.com
Pyd: Connecting D and Python
http://pyd.dsource.org