Re: Array-like object indexing

[Ryan <rtarpine@hotmail.com>]

Simon Wright wrote:
> Ryan <rtarpine@hotmail.com> writes:
> 
> The non-Ada C++ STL approach is to denote the end of the range by a
> value notionally one past the last valid element. It's not obvious
> that Last is the right name for an operation returning such a value,
> cf My_Array'Last.

Of course, that's just for iterators (which I am wrestling with 
separately :).  The STL name did always confuse me (Why is 
My_String.end() actually *past* the last character of My_String?).  I 
like First and Last being the exact indicies because it lets me ask "if 
Index not in First(My_Array)..Last(My_Array)".  I've (since originally 
asking) decided to put the responsibility on the user, but now I'm going 
to try the Index_Type'Base suggestion I received.

Thanks,
Ryan