http://d.puremagic.com/issues/show_bug.cgi?id=9160
Summary: 2.061alpha multiSort no longer working with L-value only comparators Product: D Version: D2 Platform: All OS/Version: All Status: NEW Severity: regression Priority: P2 Component: Phobos AssignedTo: nob...@puremagic.com ReportedBy: dmitry.o...@gmail.com --- Comment #0 from Dmitry Olshansky <dmitry.o...@gmail.com> 2012-12-15 06:01:52 PST --- Changing DMD to no longer accept struct literals as L-value as a side effect broke template constraint in std.algorithm.multiSort: 7556: is(typeof(binaryFun!(less[0])(E.init, E.init)) == bool) The E.init is not an L-value and thus the code below no longer works: import std.algorithm; struct A{ int x; int y; //... potentially quite big struct } bool byX(const ref A lhs, const ref A rhs) { return lhs.x < rhs.x; } bool byY(const ref A lhs, const ref A rhs) { return lhs.y < rhs.y; } void main() { auto points = [ A(4, 1), A(2, 4)]; multiSort!(byX, byY)(points); assert(points[0] == A(2, 4)); assert(points[1] == A(4, 1)); } A chunk of text for this error: multi_bug.d(22): Error: template std.algorithm.multiSort!(byX, byY).multiSort do es not match any function template declaration. Candidates are: C:\dmd2\windows\bin\..\..\src\phobos\std\algorithm.d(7712): std.algorithm .multiSort!(byX, byY).multiSort(Range)(Range r) if (validPredicates!(ElementType !(Range), less)) multi_bug.d(22): Error: template std.algorithm.multiSort!(byX, byY).multiSort(Ra nge)(Range r) if (validPredicates!(ElementType!(Range), less)) cannot deduce tem plate function from argument types !()(A[]) -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------