Function literals and lambda functions

[bearophile]

Russel Winder:

>         reduce ! ( ( a , b ) { return a + b ; } ) ( 0.0 , outputData ) 
> 
> works just fine, but:
> 
>         reduce ! ( function double ( double a , double b ) { return a + b ; } ) ( 0.0 , outputData )


import std.stdio, std.algorithm, std.range;

void main() {
    auto outputData = iota(1.0, 10.0);

    auto r1 = reduce!((a, b){ return a + b; })(0.0, outputData);
    writeln(r1);

    auto r2 = reduce!((double a, double b){ return a + b; })(0.0, outputData);
    writeln(r2);

    auto r3 = reduce!("a + b")(0.0, outputData);
    writeln(r3);

    auto r4 = reduce!q{a + b}(0.0, outputData);
    writeln(r4);

    auto r5 = reduce!q{a + b}(outputData); // not exactly the same
    writeln(r5);
}

Bye,
bearophile