On Sat, Oct 3, 2009 at 5:50 PM, Justin Johansson <n...@spam.com> wrote: > How does one determine the sizeof (in bytes) of an instance of a class in D? > > .sizeof works as advertised for structs, but for reference types, > .sizeof yields the sizeof the referencing variable (effectively same as size > of a pointer) > and not the size of the underlying instance. > > I did try scanning the NG and read spec_D1.00.pdf. Perhaps I missed it in > the latter. > > btw. I was poking under the hood of std.xml and though, wow, instances of > Element > class look humongous, and so I'm interested to how exactly how humongous. > > Thanks for all help. > Justin
There's no way to get it at compile-time in D1. The best you can do is Class.classinfo.init.length. In D2, you can use __traits(classInstanceSize, Class).