[Issue 9734] setIntersection accepts only 2 ranges, but documentation says otherwise

[d-bugmail at puremagic.com]

https://d.puremagic.com/issues/show_bug.cgi?id=9734


Jakob Ovrum <jakobovrum at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |jakobovrum at gmail.com
         Resolution|                            |FIXED


--- Comment #2 from Jakob Ovrum <jakobovrum at gmail.com> 2013-12-21 23:01:20 PST ---
(In reply to comment #0)
> std.algorithm.setIntersection only accepts 2 ranges, although the documentation
> says it accepts 2 or more. There's a static assert in the code that limits the
> input to 2 ranges. Even the example on the webpage doesn't compile:
> 
> int[] a = [ 1, 2, 4, 5, 7, 9 ]; 
> int[] b = [ 0, 1, 2, 4, 7, 8 ]; 
> int[] c = [ 0, 1, 4, 5, 7, 8 ]; 
> assert(equal(setIntersection(a, a), a)); 
> assert(equal(setIntersection(a, b), [1, 2, 4, 7][])); 
> assert(equal(setIntersection(a, b, c), [1, 4, 7][]));
> 
> (...)\dmd2\windows\bin\..\..\src\phobos\std\algorithm.d(10076): Error: static
> assert  (3u == 2u) is false
> (...)\dmd2\windows\bin\..\..\src\phobos\std\algorithm.d(10150):       
> instantiated from here: SetIntersection!("a < b", int[], int[], int[])
> test.d(16):        instantiated from here: setIntersection!("a < b",
> int[],int[],int[])
> 
> Whether this limitation is temporary or permanent, I think the docs should
> indicate that you cannot (for now) input more than 2 ranges.

https://github.com/D-Programming-Language/phobos/pull/1796

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