Using numbers - as functions

numbersasfunctions.dart

const pi = 3.1415;

extension NumbersAsFunctions on num {
    num call(num other) => this * other;
}

void main() {
    print(2(pi)); // 6.283
}

/*
    Description {
        Use numbers as functions (you still need the parentheses).
    }
    View at {
        https://dartpad.dev/?null_safety=true&id=8559b6c8fe40d0586da497c5ba9bb2f7
    }
    Inspiration from {
        https://twitter.com/Sheep_tester/status/1327393867813904384
    }
    Learned technique from {
        https://dart.dev/guides/language/language-tour#callable-classes
    }
*/