nested templates using Complex! with slices, ... confused, I am!
james.p.leblanc
james.p.leblanc at gmail.com
Mon Aug 9 18:35:56 UTC 2021
Suppose "foo_double" should return a complex double slice, with
double input args.
Similarly "foo_float" should return a float slice, with float
input args.
I thought it should be easy to parameterize with a template
taking a SINGLE
argument, either a"double" or "float" as follows:
>import std.stdio;
>import std.complex;
>
>Complex!double[] foo_double(double x, double y){
> auto r = [x, x];
> auto i = [y, y];
> auto z = [ Complex!double(x, y), Complex!double(x,y) ];
> return z;
>}
>
>Complex!float[] foo_float(float x, float y){
> auto r = [x, x];
> auto i = [y, y];
> auto z = [ Complex!float(x, y), Complex!float(x,y) ];
> return z;
>}
>
>**T[] foo_temp(Complex!T[])(T x, T y){
> auto r = [x, x];
> auto i = [y, y];
> auto z = [ Complex!T(x, y), Complex!T(x,y) ];
> return z;
>}**
>
>void main(){
> auto yd = foo_double(1.1, 2.2);
> writeln(yd); ...
> }
But, no ... I am WRONG! I get the message:
qqq.d(18): Error: identifier expected for template value parameter
Nested templates using Complex! really have me confused. How
should I
be thinking about such things in order to understand better?
Best Regards,
James
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