https://issues.dlang.org/show_bug.cgi?id=13796
--- Comment #1 from github-bugzi...@puremagic.com --- Commit pushed to master at https://github.com/dlang/phobos https://github.com/dlang/phobos/commit/415d573a3c8688396f0f46643bd1fedc923620dc Add std.experimental.typecons.HeadConst - fix issue 13796 --