Safer casts

[Dee Girl]

Sean Kelly Wrote:

> == Quote from Dee Girl (deegirl at noreply.com)'s article
> > What are good examples that show Tango is a good example of designing with a new D mindset?
> 
> I'm somewhat biased since I created the module, but I'd consider tango.core.Array
> to be a good example of a D-oriented mindset.  It's an array-specific algorithm
> module intended to leverage the D slice syntax for range speficication.  For exmaple:
> 
>     import tango.core.Array;
>     import tango.stdc.stdio;
> 
>     void main()
>     {
>         int[] buf = [1,6,2,5,9,2,3,2,4].dup;
> 
>         // calls Array.sort with optional predicate
>         buf[0 .. 3].sort( (int x, int y) { reuturn x < y; } );
>         assert( buf[0 .. 3] == [1,2,5,6]);
>         buf.sort(); // full sort of buf with default predicate
>         // below is equivalent to equal_range in C++
>         printf( "there are %d 2s in buf\n",
>                      buf[buf.lbound(2) .. buf.ubound(2)].length );
>         // more fun stuff
>         printf( "there are %d 5s between index 2 and 6\n",
>                     buf[2 .. 6].count( 5 ) );
>     }
> 
> etc. (I'm using printf for the sake of illustration, not because
> I suggest you actually use it in your app)
> 
> 
> Sean

Nice example! How did you do it? Did Tango change the compiler and added more methods to arrays? Thank you, Dee Girl