It can compile if import std.typecons and modify as below:
import std.typecons;
import std.algorithm;
void main()
{
double[] a=[3.0,4,7,11,3,2,5];
auto ret=reduce!("a+b","a+b*b")(tuple(0.0,0.0),a);
}
Here a explicit tuple is needed.
double[] a=[3.0,4,7,11,3,2,5];
auto ret=reduce!("a+a","a+b*b")(0.0,0.0,a);
phobos2Ex.d(13): Error: template
std.algorithm.Reduce!("a+a","a+b*b").reduce(E,Range) does not match any
function template declaration
phobos2Ex.d(13): Error: template
std.algorithm.Reduce!("a+a","a+b*b").reduce(E,Range)
