On Monday, 4 May 2015 at 01:58:12 UTC, bitwise wrote:
If I have a large struct that needs to be passed around, like a
4x4 matrix for example, how do I do that efficiently in D?
In std.datetime, "in" is used for most struct parameters, but
I'm confused by the docs for function parameter storage
classes[1].
In C++, I would pass a large struct as (const&):
void foo(const Matrix4x4 &m);
Is "in" in D the same as passing by const& in C++? The
documentation doesn't say anything about "in" being a
reference, but it doesn't say that "out" parameters are
references either, even though it's usage in the example
clearly shows that it is.
Thanks,
Bit
http://dlang.org/function.html#parameters
Use the ref storage class. You can use more than one storage
class i.e,
foo(in ref int x)
Unless I misunderstood you.
