digitalmars.D.bugs - [Issue 4597] New: std.algorithm.filter fails with a const range
- d-bugmail puremagic.com (36/36) Aug 07 2010 http://d.puremagic.com/issues/show_bug.cgi?id=4597
- d-bugmail puremagic.com (15/15) Aug 07 2010 http://d.puremagic.com/issues/show_bug.cgi?id=4597
- d-bugmail puremagic.com (7/7) Aug 07 2010 http://d.puremagic.com/issues/show_bug.cgi?id=4597
- d-bugmail puremagic.com (11/14) Sep 14 2011 http://d.puremagic.com/issues/show_bug.cgi?id=4597
http://d.puremagic.com/issues/show_bug.cgi?id=4597 Summary: std.algorithm.filter fails with a const range Product: D Version: D2 Platform: Other OS/Version: All Status: NEW Keywords: rejects-valid Severity: normal Priority: P2 Component: Phobos AssignedTo: nobody puremagic.com ReportedBy: braddr puremagic.com --- Index: std/algorithm.d =================================================================== --- std/algorithm.d (revision 1807) +++ std/algorithm.d (working copy) -830,6 +830,9 // With chain assert(equal(filter!overX(chain(a, nums)), [22, 42])); + + const int[] list = [ 1, 2, 10, 11, 3, 4 ]; + assert(equal(filter!overX(list), [ 1, 2, 10, 3, 4 ])); } // move Adding that test produces the folling failure: std/algorithm.d(737): Error: this is not mutable That's the opSlice function of struct Filter: ref Filter opSlice() { return this; } -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Aug 07 2010
http://d.puremagic.com/issues/show_bug.cgi?id=4597 Andrei Alexandrescu <andrei metalanguage.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |andrei metalanguage.com 22:37:26 PDT --- This is quite problematic. Most of std.algorithm fails on const and immutable arrays because it does not do the conversion const(int[]) -> const(int)[] and immutable(int[]) -> immutable(int)[], both of which are legal. I'm not sure how this can be addressed. A brute force solution would be to special-case all algorithms for certain array types, but that would be horrible. Ideas are welcome. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Aug 07 2010
http://d.puremagic.com/issues/show_bug.cgi?id=4597 --- note, the assert is wrong, should be: assert(equal(filter!overX(list), [ 11 ])); -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Aug 07 2010
http://d.puremagic.com/issues/show_bug.cgi?id=4597 yebblies <yebblies gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |yebblies gmail.comI'm not sure how this can be addressed. A brute force solution would be to special-case all algorithms for certain array types, but that would be horrible. Ideas are welcome.One idea is issue 6289 -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Sep 14 2011