dmd 2.029 release

Andrei Alexandrescu SeeWebsiteForEmail at erdani.org
Thu Apr 23 06:54:06 PDT 2009


Georg Wrede wrote:
> Second, since we have cool stuff in D, like templates, boxing, and other 
> advanced things, then compared to them, it should not be a big deal to 
> have automatic creation of toString for structs and objects. (This could 
> even be on-demand, i.e. unless called, the toString is not created for 
> an object/struct.)
> 
> Since the purpose of toString here is not Grand Style, it should suffice 
> to just recursively print the struct with its possible substructs, etc.
> 
> This would relieve the programmer from the entire extra work, and it 
> would also make objects look tidyer in source code.

Did you know that this:

#!/home/andrei/bin/rdmd
import std.conv, std.stdio;

struct S1
{
     int a = 42;
     S2 b;
}

struct S2
{
     int x = 4;
     float y = 5.5;
}

void main()
{
     writeln(to!string(S1()));
}

prints this

S1(42, S2(4, 5.5))

?


Andrei


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