digitalmars.D.bugs - [Issue 2871] New: Take assumes that R.opIndex(uint) returns an lvalue.
- d-bugmail puremagic.com (34/34) Apr 21 2009 http://d.puremagic.com/issues/show_bug.cgi?id=2871
- d-bugmail puremagic.com (10/10) Apr 21 2009 http://d.puremagic.com/issues/show_bug.cgi?id=2871
- d-bugmail puremagic.com (10/10) Oct 11 2009 http://d.puremagic.com/issues/show_bug.cgi?id=2871
- d-bugmail puremagic.com (12/12) Jun 17 2010 http://d.puremagic.com/issues/show_bug.cgi?id=2871
http://d.puremagic.com/issues/show_bug.cgi?id=2871 Summary: Take assumes that R.opIndex(uint) returns an lvalue. Product: D Version: 2.029 Platform: PC OS/Version: Windows Status: NEW Severity: normal Priority: P2 Component: Phobos AssignedTo: bugzilla digitalmars.com ReportedBy: dsimcha yahoo.com import std.range, std.algorithm; void main() { auto r = iota(0, 10, 1); assert(equal(r, [0, 1, 2, 3, 4, 5, 6, 7, 8, 9][])); r = iota(0, 11, 3); assert(equal(r, [0, 3, 6, 9][])); assert(r[2] == 6); } C:\dmd\windows\bin\..\..\src\phobos\std\range.d(1184): Error: this._input.opIndex(index) is not an lvalue C:\dmd\windows\bin\..\..\src\phobos\std\range.d(4): Error: template instance std.range.iota!(int,int,int) error instantiating This is caused by static if (isRandomAccessRange!(R)) ref ElementType!(R) opIndex(uint index) { enforce(_maxAvailable > index); return _input[index]; } in std.range. What is needed is some compile time reflection to determine whether a function returns by reference or value. --
Apr 21 2009
http://d.puremagic.com/issues/show_bug.cgi?id=2871 Can't auto help here? static if (isRandomAccessRange!(R)) auto opIndex(uint index) { enforce(_maxAvailable > index); return _input[index]; } --
Apr 21 2009
http://d.puremagic.com/issues/show_bug.cgi?id=2871 Andrei Alexandrescu <andrei metalanguage.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |ASSIGNED CC| |andrei metalanguage.com AssignedTo|nobody puremagic.com |andrei metalanguage.com -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Oct 11 2009
http://d.puremagic.com/issues/show_bug.cgi?id=2871 David Simcha <dsimcha yahoo.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution| |FIXED This one's been fixed for ages. I don't know how it's slipped under the radar for so long. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Jun 17 2010