Templates, D way

[Void-995 via Digitalmars-d]

Hi, everyone. I'm pretty new to D and trying my first steps in 
it. Currently I'm trying to port some code from C/C++ with pretty 
weird data structures and don't like idea of making boilerplate 
functions for accessing sub-lists in main binary structure (lets 
not talk about it's design, it's from legacy thing I want to deal 
with and I can't change the format itself or writing a lot of 
additional parsing code). With hour I spent on trying I've ended 
with what you may see below, but I wonder if there is more 
pleasant variant of re-writing that template as I haven't found 
anything better in either books or online documentation yet:

template DataList(const char[] listName, T, alias dataOffset, 
alias listLength)
{
        const char[] DataList = format(q{
                %s[] %s()
                {
                        return (cast(%s *)(cast(byte *)(&this) + %s))[0 .. %s];
                }
	}, T.stringof, listName, T.stringof, dataOffset.stringof, 
listLength.stringof);
}
struct MyBinarySubStructAForA
{
        int someIntegerFieldA;
        float someFloatFieldA;
}

struct MyBinarySubStructBForA
{
        int someIntegerFieldB;
        float someFloatFieldB;
}

struct MyBinaryStructA
{
        int firstSublistMembersCount;
        int firstSublistMembersOffset;

        int secondSublistMembersCount;
        int secondSublistMembersOffset;
        
	@property mixin(DataList!("firstSublist", 
MyBinarySubStructAForA, firstSublistMembersCount, 
firstSublistMembersOffset));
	@property mixin(DataList!("secondSublist", 
MyBinarySubStructBForA, secondSublistMembersCount, 
secondSublistMembersOffset));
}

...

MyBinaryStructA *binaryData = cast(MyBinaryStructA *)fileData.ptr;