Struct Constructor Lazy

[Jiyan via Digitalmars-d-learn]

Hey there:)

i want to know whether the following is somehow possible:
structs dont have default constructors, i know so:

struct A
{
int field;
this(int i){field = getDataFromFile("file.txt");}
}

A instance = A(0);

Here comes my issue:
when A(0) is called I would want here optimal performance, so 
there doesnt even need to be a value pushed on the stack (i=0), 
what would be like having a constructor with zero arguments (i is 
never used!).
Im pretty new to D, can somebody tell me how i would do this?
Is this(lazy int i){ ... a solution?