std::optional library for C++14
A reasonably-conforming optional class template implementation for C++14
that automatically "falls forward" to std::optional if available.
Supported compilers are GCC >= 4.9, Clang >= 3.7, and MSVC >= 14.3.
Reviews
Builds
| toolchain |
public-0.18.1 |
| target |
x86_64-apple-darwin23.5.0 |
| tgt config |
macos_14-gcc_14_homebrew-static_O3 |
| timestamp |
2026-10-01 21:54:13 UTC (20:07:36 hours ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-apple-darwin23.5.0 |
| tgt config |
macos_14-gcc_14_homebrew-O3 |
| timestamp |
2026-10-01 21:53:04 UTC (20:08:44 hours ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-apple-darwin23.5.0 |
| tgt config |
macos_14-gcc_14_homebrew |
| timestamp |
2026-10-01 21:51:57 UTC (20:09:52 hours ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_fedora_44-gcc_16-bindist |
| timestamp |
2026-10-01 13:04:03 UTC (01 04:57:45 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-clang_18_libc++-static_O3 |
| timestamp |
2026-09-29 17:20:03 UTC (03 00:41:45 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-clang_18_libc++-O3 |
| timestamp |
2026-09-29 17:19:15 UTC (03 00:42:33 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-clang_18_libc++ |
| timestamp |
2026-09-29 17:18:55 UTC (03 00:42:53 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-clang_18-static_O3 |
| timestamp |
2026-09-29 17:18:30 UTC (03 00:43:18 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-clang_18-O3 |
| timestamp |
2026-09-29 17:18:20 UTC (03 00:43:28 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-clang_18 |
| timestamp |
2026-09-29 17:17:21 UTC (03 00:44:27 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-clang_22_libc++-static_O3 |
| timestamp |
2026-09-28 06:12:45 UTC (04 11:49:03 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-clang_22_libc++-O3 |
| timestamp |
2026-09-28 06:12:20 UTC (04 11:49:28 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-clang_22-static_O3 |
| timestamp |
2026-09-28 06:12:07 UTC (04 11:49:41 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-clang_22_libc++ |
| timestamp |
2026-09-28 06:11:57 UTC (04 11:49:52 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-clang_22-O3 |
| timestamp |
2026-09-28 06:11:23 UTC (04 11:50:25 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-clang_22 |
| timestamp |
2026-09-28 06:11:11 UTC (04 11:50:37 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-gcc_16-static_O3 |
| timestamp |
2026-09-28 03:59:43 UTC (04 14:02:05 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-gcc_16-ndebug_O3 |
| timestamp |
2026-09-28 03:59:19 UTC (04 14:02:30 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-gcc_16-O3 |
| timestamp |
2026-09-28 03:59:17 UTC (04 14:02:31 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-gcc_16 |
| timestamp |
2026-09-28 03:59:09 UTC (04 14:02:39 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-apple-darwin22.5.0 |
| tgt config |
macos_13-clang_15.0 |
| timestamp |
2026-09-28 02:47:10 UTC (04 15:14:38 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_fedora_43-gcc_15-bindist |
| timestamp |
2026-09-28 02:32:32 UTC (04 15:29:17 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-gcc_14-bindist |
| timestamp |
2026-09-28 02:20:45 UTC (04 15:41:03 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-gcc_15-O3 |
| timestamp |
2026-09-27 13:50:28 UTC (05 04:11:20 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-gcc_15 |
| timestamp |
2026-09-27 13:49:40 UTC (05 04:12:08 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-clang_21_libc++ |
| timestamp |
2026-09-27 13:10:12 UTC (05 04:51:37 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-clang_21 |
| timestamp |
2026-09-27 13:10:04 UTC (05 04:51:45 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_12-gcc_12-bindist |
| timestamp |
2026-09-27 13:02:54 UTC (05 04:58:54 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_ubuntu_24.04-gcc_13-bindist |
| timestamp |
2026-09-27 13:01:51 UTC (05 04:59:57 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-freebsd15.0 |
| tgt config |
freebsd_15-clang_19-static_O3 |
| timestamp |
2026-09-27 12:38:43 UTC (05 05:23:05 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-freebsd15.0 |
| tgt config |
freebsd_15-clang_19 |
| timestamp |
2026-09-27 12:38:41 UTC (05 05:23:07 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-freebsd15.0 |
| tgt config |
freebsd_15-clang_19-O3 |
| timestamp |
2026-09-27 12:38:29 UTC (05 05:23:19 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-freebsd14.1 |
| tgt config |
freebsd_14-clang_18 |
| timestamp |
2026-09-27 12:27:00 UTC (05 05:34:48 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_12-gcc_14 |
| timestamp |
2026-09-27 12:25:56 UTC (05 05:35:52 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-gcc_14-static_O3 |
| timestamp |
2026-09-27 10:46:40 UTC (05 07:15:08 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-gcc_14-ndebug_O3 |
| timestamp |
2026-09-27 10:46:29 UTC (05 07:15:20 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-gcc_14-O3 |
| timestamp |
2026-09-27 10:46:09 UTC (05 07:15:39 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-gcc_14 |
| timestamp |
2026-09-27 10:45:52 UTC (05 07:15:56 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-microsoft-win32-msvc14.3 |
| tgt config |
windows_10-msvc_17 |
| timestamp |
2026-09-26 21:09:26 UTC (05 20:52:22 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-gcc_13 |
| timestamp |
2026-09-24 13:49:42 UTC (08 04:12:06 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_10-gcc_10.2 |
| timestamp |
2026-09-24 13:11:26 UTC (08 04:50:22 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_11-gcc_11.3 |
| timestamp |
2026-09-24 13:09:46 UTC (08 04:52:02 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_10-gcc_9.3 |
| timestamp |
2026-09-24 13:05:33 UTC (08 04:56:15 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_9-gcc_7.4 |
| timestamp |
2026-09-24 13:04:01 UTC (08 04:57:47 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-microsoft-win32-msvc14.2 |
| tgt config |
windows_10-msvc_16.11 |
| timestamp |
2026-09-24 13:02:28 UTC (08 04:59:20 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-microsoft-win32-msvc14.1 |
| tgt config |
windows_10-msvc_15.9 |
| timestamp |
2026-09-24 13:01:50 UTC (08 04:59:59 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_11-gcc_12.1 |
| timestamp |
2026-09-24 13:01:47 UTC (08 05:00:01 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_12-gcc_13.1 |
| timestamp |
2026-09-24 13:01:47 UTC (08 05:00:01 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-microsoft-win32-msvc14.2 |
| tgt config |
windows_10_devmode-msvc_16.11 |
| timestamp |
2026-09-24 13:01:44 UTC (08 05:00:04 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-microsoft-win32-msvc14.0 |
| tgt config |
windows_10-msvc_14.3 |
| timestamp |
2026-09-24 13:01:16 UTC (08 05:00:32 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_ubuntu_16.04-clang_3.7_libc++ |
| timestamp |
2026-09-24 13:00:18 UTC (08 05:01:30 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_9-gcc_8.4 |
| timestamp |
2026-09-24 12:59:50 UTC (08 05:01:58 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_8-gcc_4.9 |
| timestamp |
2026-09-24 12:59:29 UTC (08 05:02:19 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_11-gcc_10.2-bindist |
| timestamp |
2026-09-24 12:58:40 UTC (08 05:03:08 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-microsoft-win32-msvc14.5 |
| tgt config |
windows_10-msvc_18-static_O2 |
| timestamp |
2026-09-23 17:41:19 UTC (09 00:20:29 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-microsoft-win32-msvc14.5 |
| tgt config |
windows_10-msvc_18-O2 |
| timestamp |
2026-09-23 17:41:12 UTC (09 00:20:36 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-microsoft-win32-msvc14.5 |
| tgt config |
windows_10-msvc_18 |
| timestamp |
2026-09-23 17:40:39 UTC (09 00:21:09 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-microsoft-win32-msvc14.5 |
| tgt config |
windows_10-clang_21_msvc_18-O2 |
| timestamp |
2026-09-23 16:23:40 UTC (09 01:38:09 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-microsoft-win32-msvc14.5 |
| tgt config |
windows_10-clang_21_msvc_18-static_O2 |
| timestamp |
2026-09-23 16:23:08 UTC (09 01:38:40 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-microsoft-win32-msvc14.5 |
| tgt config |
windows_10-clang_21_msvc_18 |
| timestamp |
2026-09-23 16:22:01 UTC (09 01:39:47 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-w64-mingw32 |
| tgt config |
windows_10-gcc_15.2_mingw_w64-static_O2 |
| timestamp |
2026-09-20 19:19:44 UTC (11 22:42:04 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-w64-mingw32 |
| tgt config |
windows_10-gcc_15.2_mingw_w64 |
| timestamp |
2026-09-20 19:18:53 UTC (11 22:42:55 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-w64-mingw32 |
| tgt config |
windows_10-gcc_15.2_mingw_w64-O2 |
| timestamp |
2026-09-20 19:18:47 UTC (11 22:43:01 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_ubuntu_26.04-gcc_15-bindist |
| timestamp |
2026-09-20 11:30:31 UTC (12 06:31:17 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-apple-darwin23.5.0 |
| tgt config |
macos_14-clang_15.0-static_O3 |
| timestamp |
2026-09-18 18:11:19 UTC (13 23:50:29 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-apple-darwin23.5.0 |
| tgt config |
macos_14-clang_15.0-O3 |
| timestamp |
2026-09-18 18:10:21 UTC (13 23:51:28 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-apple-darwin23.5.0 |
| tgt config |
macos_14-clang_15.0 |
| timestamp |
2026-09-18 18:09:24 UTC (13 23:52:24 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_rhel_8-gcc_8-bindist |
| result |
unbuilt |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_rhel_9-gcc_11-bindist |
| result |
unbuilt |
Changes
Version 1.0.0
* First public release.