Get type from string

[Adam D. Ruppe via Digitalmars-d-learn]

On Wednesday, 28 October 2015 at 17:38:45 UTC, DarkRiDDeR wrote:
> string name = "Bob";
> __traits(getMember, Types.getType(name), "print")();
>
> How can you implement "Types.getType(name)"? I do not know in 
> advance what can be the class names.

You don't. __traits works at compile time, the string isn't known 
until run time.

If you can rewrite it to use an interface, you can make that work 
though.

interface Printable {
    void print();
}

class Bob : Printable {
    void print() { writeln("hey"); }
}

void main() {
    string name = "test.Bob"; // module name needed
    Printable printable = cast(Printable) Object.factory(name);
    if(printable is null) throw new Exception("bad class");

    printable.print();
}


Object.factory's neck is on the chopping block, but it might 
stick around anyway, and even if it goes away there will be an 
alternative. You could register classes in your own code, for 
example.

Regardless, this is a solution for now.