std.algorithm issue

[bearophile]

Brian Myers:
> Is it possible to map! or reduce! a member function or delegate against a
> range? If so how would I do that?

Do you mean something like this?

import d.func: map, xrange, putr;

class Foo {
    int sqr(int x) { return x * x; }
}

class Baz {
    float div2(int x) { return x / 2; }
}

void main() {
    auto f1 = new Foo;
    putr( map(&f1.sqr, xrange(10)) );

    auto b1 = new Baz;
    putr( map(&b1.div2, xrange(10)) );
}

Output:
[0, 1, 4, 9, 16, 25, 36, 49, 64, 81]
[0.0, 0.0, 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0]

Bye,
bearophile