libboost-optional/1.85.0

[brief]

A value-semantic, type-safe wrapper for representing 'optional' (or 'nullable') objects of a given type. An optional object may or may not contain a value of the underlying type

A library for representing optional (nullable) objects in C++.

optional<int> readInt(); // this function may return either an int or a not-an-int

if (optional<int> oi = readInt()) // did I get a real int
  cout << "my int is: " << *oi;   // use my int
else
  cout << "I have no int";

For more information refer to the documentation provided with this library.

version 1.85.0
license BSL-1.0Boost Software License 1.0
repository https://pkg.cppget.org/1/stable
download libboost-optional-1.85.0.tar.gz
sha256 eb36e00d6801769c3932943eebac95fb78f448db7bd5bab2548e2e10846b97a2
project boost
url github.com/boostorg/optional
doc-url www.boost.org/doc/libs/1_85_0/libs/optional
package-url github.com/build2-packaging/boost
package-email packaging@build2.orgMailing list
topics C++Boost

Depends (10)

libboost-assert == 1.85.0
libboost-config == 1.85.0
libboost-core == 1.85.0
libboost-detail == 1.85.0
libboost-move == 1.85.0
libboost-predef == 1.85.0
libboost-static-assert == 1.85.0
libboost-throw-exception == 1.85.0
libboost-type-traits == 1.85.0
libboost-utility == 1.85.0

Reviews

fail 0
pass 1

Builds

toolchain public-0.17.0
target aarch64-linux-gnu
tgt config linux_debian_12-clang_17_libc++
timestamp 2025-09-24 11:22:27 UTC (13:36:08 hours ago)
result success | log | rebuild
toolchain public-0.17.0
target aarch64-linux-gnu
tgt config linux_debian_12-clang_17
timestamp 2025-09-24 11:21:53 UTC (13:36:42 hours ago)
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toolchain public-0.17.0
target aarch64-linux-gnu
tgt config linux_debian_12-gcc_13
timestamp 2025-09-24 11:11:32 UTC (13:47:03 hours ago)
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toolchain public-0.17.0
target x86_64-freebsd13.3
tgt config freebsd_13-clang_17
timestamp 2025-09-23 22:23:07 UTC (01 02:35:28 days ago)
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toolchain public-0.17.0
target x86_64-freebsd14.1
tgt config freebsd_14-clang_18-static_O3
timestamp 2025-09-23 22:18:31 UTC (01 02:40:04 days ago)
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toolchain public-0.17.0
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tgt config freebsd_14-clang_18-O3
timestamp 2025-09-23 22:18:05 UTC (01 02:40:31 days ago)
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toolchain public-0.17.0
target x86_64-linux-gnu
tgt config linux_debian_12-clang_17_libc++
timestamp 2025-09-23 22:15:33 UTC (01 02:43:03 days ago)
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toolchain public-0.17.0
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tgt config freebsd_14-clang_18
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toolchain public-0.17.0
target x86_64-linux-gnu
tgt config linux_debian_12-clang_17
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toolchain public-0.17.0
target x86_64-linux-gnu
tgt config linux_debian_12-gcc_13.1
timestamp 2025-09-23 22:00:55 UTC (01 02:57:40 days ago)
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toolchain public-0.17.0
target aarch64-linux-gnu
tgt config linux_debian_12-clang_18_libc++-O3
timestamp 2025-09-23 03:52:06 UTC (01 21:06:29 days ago)
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toolchain public-0.17.0
target aarch64-linux-gnu
tgt config linux_debian_12-clang_18_libc++
timestamp 2025-09-23 03:51:32 UTC (01 21:07:04 days ago)
result success | log | rebuild
toolchain public-0.17.0
target aarch64-linux-gnu
tgt config linux_debian_12-clang_18_libc++-static_O3
timestamp 2025-09-23 03:49:30 UTC (01 21:09:05 days ago)
result success | log | rebuild
toolchain public-0.17.0
target aarch64-linux-gnu
tgt config linux_debian_12-clang_18-O3
timestamp 2025-09-23 03:48:52 UTC (01 21:09:44 days ago)
result success | log | rebuild
toolchain public-0.17.0
target aarch64-linux-gnu
tgt config linux_debian_12-clang_18-static_O3
timestamp 2025-09-23 03:47:45 UTC (01 21:10:51 days ago)
result success | log | rebuild
toolchain public-0.17.0
target aarch64-linux-gnu
tgt config linux_debian_12-clang_18
timestamp 2025-09-23 03:40:09 UTC (01 21:18:27 days ago)
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toolchain public-0.17.0
target x86_64-linux-gnu
tgt config linux_fedora_40-gcc_14-bindist
timestamp 2025-09-22 19:53:57 UTC (02 05:04:38 days ago)
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toolchain public-0.17.0
target x86_64-linux-gnu
tgt config linux_debian_12-gcc_14-O3
timestamp 2025-09-22 07:30:56 UTC (02 17:27:40 days ago)
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toolchain public-0.17.0
target x86_64-linux-gnu
tgt config linux_debian_12-gcc_14-static_O3
timestamp 2025-09-22 07:28:42 UTC (02 17:29:53 days ago)
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toolchain public-0.17.0
target x86_64-linux-gnu
tgt config linux_debian_12-gcc_14
timestamp 2025-09-22 07:27:20 UTC (02 17:31:15 days ago)
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toolchain public-0.17.0
target x86_64-linux-gnu
tgt config linux_debian_12-gcc_14-ndebug_O3
timestamp 2025-09-22 07:24:59 UTC (02 17:33:37 days ago)
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toolchain public-0.17.0
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tgt config windows_10-gcc_13.2_mingw_w64-static_O2
timestamp 2025-09-22 07:24:42 UTC (02 17:33:54 days ago)
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toolchain public-0.17.0
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tgt config windows_10-gcc_13.2_mingw_w64
timestamp 2025-09-22 07:21:50 UTC (02 17:36:46 days ago)
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toolchain public-0.17.0
target x86_64-microsoft-win32-msvc14.3
tgt config windows_10-clang_18_llvm_msvc_17.10-static_O2
timestamp 2025-09-22 07:03:04 UTC (02 17:55:32 days ago)
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toolchain public-0.17.0
target x86_64-microsoft-win32-msvc14.3
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timestamp 2025-09-22 06:59:22 UTC (02 17:59:13 days ago)
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toolchain public-0.17.0
target x86_64-microsoft-win32-msvc14.3
tgt config windows_10-clang_18_llvm_msvc_17.10
timestamp 2025-09-22 06:56:43 UTC (02 18:01:52 days ago)
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toolchain public-0.17.0
target x86_64-linux-gnu
tgt config linux_debian_12-gcc_12-bindist
timestamp 2025-09-22 06:51:56 UTC (02 18:06:40 days ago)
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toolchain public-0.17.0
target x86_64-microsoft-win32-msvc14.3
tgt config windows_10-msvc_17.10-O2
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toolchain public-0.17.0
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tgt config windows_10-msvc_17.10
timestamp 2025-09-22 06:40:37 UTC (02 18:17:59 days ago)
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toolchain public-0.17.0
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tgt config linux_ubuntu_24.04-gcc_13-bindist
timestamp 2025-09-22 06:39:15 UTC (02 18:19:20 days ago)
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toolchain public-0.17.0
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tgt config windows_10-msvc_17.10-static_O2
timestamp 2025-09-22 06:37:32 UTC (02 18:21:04 days ago)
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toolchain public-0.17.0
target x86_64-microsoft-win32-msvc14.3
tgt config windows_10-msvc_17.8-static_O2
timestamp 2025-09-22 06:29:42 UTC (02 18:28:53 days ago)
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toolchain public-0.17.0
target x86_64-microsoft-win32-msvc14.3
tgt config windows_10-msvc_17.8-O2
timestamp 2025-09-22 06:28:16 UTC (02 18:30:20 days ago)
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toolchain public-0.17.0
target x86_64-microsoft-win32-msvc14.3
tgt config windows_10-msvc_17.8
timestamp 2025-09-22 06:22:30 UTC (02 18:36:05 days ago)
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toolchain public-0.17.0
target x86_64-microsoft-win32-msvc14.3
tgt config windows_10-clang_17_msvc_msvc_17.10
timestamp 2025-09-22 06:15:33 UTC (02 18:43:02 days ago)
result success | log | rebuild
toolchain public-0.17.0
target aarch64-linux-gnu
tgt config linux_debian_12-gcc_14-static_O3
timestamp 2025-09-21 19:29:38 UTC (03 05:28:57 days ago)
result success | log | rebuild
toolchain public-0.17.0
target aarch64-linux-gnu
tgt config linux_debian_12-gcc_14-ndebug_O3
timestamp 2025-09-21 19:28:26 UTC (03 05:30:09 days ago)
result success | log | rebuild
toolchain public-0.17.0
target aarch64-linux-gnu
tgt config linux_debian_12-gcc_14
timestamp 2025-09-21 19:26:46 UTC (03 05:31:50 days ago)
result success | log | rebuild
toolchain public-0.17.0
target aarch64-linux-gnu
tgt config linux_debian_12-gcc_14-O3
timestamp 2025-09-21 19:26:14 UTC (03 05:32:22 days ago)
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toolchain public-0.17.0
target x86_64-linux-gnu
tgt config linux_debian_12-clang_18
result unbuilt
toolchain public-0.17.0
target x86_64-linux-gnu
tgt config linux_debian_12-clang_18-O3
result unbuilt
toolchain public-0.17.0
target x86_64-linux-gnu
tgt config linux_debian_12-clang_18-static_O3
result unbuilt
toolchain public-0.17.0
target x86_64-linux-gnu
tgt config linux_debian_12-clang_18_libc++
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toolchain public-0.17.0
target x86_64-linux-gnu
tgt config linux_debian_12-clang_18_libc++-O3
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toolchain public-0.17.0
target x86_64-linux-gnu
tgt config linux_debian_12-clang_18_libc++-static_O3
result unbuilt
toolchain public-0.17.0
target x86_64-linux-gnu
tgt config linux_fedora_39-gcc_13-bindist
result unbuilt
toolchain public-0.17.0
target x86_64-apple-darwin22.5.0
tgt config macos_13-clang_15.0
result unbuilt
toolchain public-0.17.0
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tgt config macos_14-clang_15.0
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toolchain public-0.17.0
target x86_64-apple-darwin23.5.0
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result unbuilt
target x86_64-apple-darwin23.5.0
tgt config macos_14-gcc_14_homebrew
result excluded (https://github)
target x86_64-apple-darwin23.5.0
tgt config macos_14-gcc_14_homebrew-O3
result excluded (https://github)
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result excluded (https://github)