empty string in D programing language

Question

What is empty string in D programing language?

String is array of characters ( http://dlang.org/arrays.html#strings )
Probably: alias immutable(char)[] string

Based on that empty string should be an empty array. But then, what kind of thing the empty array is?

Any ideas?

Answer 1

any (non-static) array is essentially a struct with a pointer to the start of the memory block the array is contained in and a length

an empty array just has length==0