import std.algorithm: group; void main() { const a = [1, 1, 2, 2]; a.group; } DMD 2.063beta2: ...\dmd2\src\phobos\std\algorithm.d(3326): Error: cannot modify struct this._current Tuple!(const(int), uint) with immutable members temp.d(4): Error: template instance std.algorithm.group!("a == b", const(int)[]) error instantiating ...\dmd2\src\phobos\std\algorithm.d(3358): Error: cannot modify struct ret._current Tuple!(const(int), uint) with immutable members
*** Issue 13857 has been marked as a duplicate of this issue. ***
*** Issue 13162 has been marked as a duplicate of this issue. ***
https://github.com/D-Programming-Language/phobos/pull/2798
Commits pushed to master at https://github.com/D-Programming-Language/phobos https://github.com/D-Programming-Language/phobos/commit/d1ffb938b549e454038a210b7799a732751c468d Fix Issue 10104 - Group of array of const/immutable https://github.com/D-Programming-Language/phobos/commit/a67689b7ec7dbc2ba1c0451cad131cc018358a28 Merge pull request #2798 from Poita/Issue10104 Fix Issue 10104 - Group of array of const/immutable
Commits pushed to 2.067 at https://github.com/D-Programming-Language/phobos https://github.com/D-Programming-Language/phobos/commit/d1ffb938b549e454038a210b7799a732751c468d Fix Issue 10104 - Group of array of const/immutable https://github.com/D-Programming-Language/phobos/commit/a67689b7ec7dbc2ba1c0451cad131cc018358a28 Merge pull request #2798 from Poita/Issue10104