http://d.puremagic.com/issues/show_bug.cgi?id=9734
Summary: setIntersection accepts only 2 ranges, but
documentation says otherwise
Product: D
Version: D2
Platform: All
OS/Version: All
Status: NEW
Severity: normal
Priority: P2
Component: websites
AssignedTo: [email protected]
ReportedBy: [email protected]
--- Comment #0 from [email protected] 2013-03-16 03:18:26 PDT ---
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.
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