Derive Macro mem_dbg::MemSize

#[derive(MemSize)]
{
    // Attributes available to this derive:
    #[copy_type]
}

Generate a mem_dbg::MemSize implementation for custom types.

Presently we do not support unions.

The attribute copy_type can be used on [Copy] types that do not contain non-'static references to make MemSize::mem_size faster on arrays, vectors and slices. Note that specifying copy_type will add the bound that the type is Copy + 'static.

See mem_dbg::CopyType for more details.