Tango BitArray Initialization

[Colin Huang]

Sean Kelly Wrote:

> Colin Huang wrote:
> > Sean Kelly Wrote:
> > 
> >> I don't think this is legal in D.  In fact, the syntax is a huge problem 
> >> in C++ because the parser often can't distinguish between a variable 
> >> decl and a function prototype, and function prototypes take precedence. 
> > 
> > Yeah, that got me really confused when I first started learning C++
> > 
> >>   It may be uglier, but:
> >>
> >>      BitArray b = BitArray( 1, 0, 1 );
> >>
> >> is better than:
> >>
> >>      BitArray b( 1, 0, 1 );
> >>
> >> I only wish that the syntax worked for all stack variables.  ie.
> >>
> >>      int x = int( 1 );
> > 
> > Why is this useful? Isn't "int x = 1" enough?
> 
> Templates.  It still isn't perfect because classes can't be initialized 
> this way, but:
> 
>      void buildAndCall(T, Call, Params...)( Call fn, Params p )
>      {
>          T val = T( p );
>          fn( val );
>      }
> 
> Probably a bad example, but you get the idea.  It's nice to be able to 
> initialize everything using the same syntax.  I'd almost suggest:
> 
>      scope T val = new T( p );
> 
> as the "universal" scoped declaration syntax, but the presence of the 
> 'new' is not terribly ideal, even though it should work for classes as well.
> 

Ah, that makes sense. Should've thought of it :)

Colin