On Friday, 25 April 2014 at 12:54:25 UTC, bearophile wrote:
Dicebot:
std.typecons.Tuple is just a subset of all structs
implementing specific behavior. It still acts as struct
everywhere when applicable.
A subset is not the same as the whole set.
You are missing something important about what a data structure
is. Take a look at your computer science books.
Another example: a dynamic array allows several operations,
including append at the end and pop from the end. If I define a
Stack data structure based on a dynamic array with just its
pop/append/empty/length operations, I have defined a new data
structure.
Bye,
bearophile
I am not interested in academic definitions. D is not an academic
language (thanks gods!) and expecting it to prioritize formal
concepts over mundane pragmatism only leads to frustration. The
fact that you can use D rules to emulate certain concept as a
user-defined type does not make domain semantics of that type
more important than language. It is still a second-class citizen.
You don't change language rules by creating new data structures.
Type system still must prevail :)
