libboost-optional/1.87.0

[full]

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 1.87.0
license BSL-1.0Boost Software License 1.0
repository https://pkg.cppget.org/1/stable
download libboost-optional-1.87.0.tar.gz
sha256 4ef906407ebb30e17f1b70dbace45fe7cb36b95a91d73a62d540028d918c59cd
project boost
url github.com/boostorg/optional
doc-url www.boost.org/doc/libs/1_87_0/libs/optional
package-url github.com/build2-packaging/boost
package-email packaging@build2.orgMailing list
topics C++Boost

Depends (5)

libboost-assert == 1.87.0
libboost-config == 1.87.0
libboost-core == 1.87.0
libboost-throw-exception == 1.87.0
libboost-type-traits == 1.87.0

Reviews

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Builds

toolchain public-0.17.0
target x86_64-microsoft-win32-msvc14.3
tgt config windows_10-msvc_17.10-O2
timestamp 2025-09-06 16:16:42 UTC (01 01:12:42 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 2025-09-06 16:15:59 UTC (01 01:13:25 days ago)
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toolchain public-0.17.0
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tgt config windows_10-msvc_17.10
timestamp 2025-09-06 15:57:12 UTC (01 01:32:12 days ago)
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toolchain public-0.17.0
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tgt config linux_fedora_40-gcc_14-bindist
timestamp 2025-09-06 04:46:12 UTC (01 12:43:11 days ago)
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toolchain public-0.17.0
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tgt config linux_debian_12-clang_18_libc++-static_O3
timestamp 2025-09-06 04:06:43 UTC (01 13:22:41 days ago)
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toolchain public-0.17.0
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tgt config linux_debian_12-clang_18_libc++
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toolchain public-0.17.0
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timestamp 2025-09-06 04:05:42 UTC (01 13:23:41 days ago)
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toolchain public-0.17.0
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tgt config linux_debian_12-clang_18
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toolchain public-0.17.0
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toolchain public-0.17.0
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tgt config linux_debian_12-clang_18-O3
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toolchain public-0.17.0
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tgt config linux_debian_12-gcc_14-static_O3
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toolchain public-0.17.0
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tgt config linux_debian_12-gcc_14-ndebug_O3
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toolchain public-0.17.0
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tgt config linux_debian_12-gcc_14-O3
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toolchain public-0.17.0
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tgt config linux_debian_12-gcc_14
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toolchain public-0.17.0
target aarch64-linux-gnu
tgt config linux_debian_12-clang_17_libc++
timestamp 2025-09-05 01:57:24 UTC (02 15:32:00 days ago)
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toolchain public-0.17.0
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tgt config linux_debian_12-clang_17
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toolchain public-0.17.0
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tgt config linux_debian_12-gcc_14-O3
timestamp 2025-09-04 23:30:08 UTC (02 17:59:15 days ago)
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toolchain public-0.17.0
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tgt config windows_10-clang_18_llvm_msvc_17.10-static_O2
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toolchain public-0.17.0
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tgt config windows_10-clang_18_llvm_msvc_17.10
timestamp 2025-09-04 23:29:06 UTC (02 18:00:17 days ago)
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toolchain public-0.17.0
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toolchain public-0.17.0
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toolchain public-0.17.0
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toolchain public-0.17.0
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toolchain public-0.17.0
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tgt config windows_10-msvc_17.8-static_O2
timestamp 2025-09-04 23:16:50 UTC (02 18:12:33 days ago)
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toolchain public-0.17.0
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tgt config windows_10-msvc_17.8-O2
timestamp 2025-09-04 23:16:03 UTC (02 18:13:20 days ago)
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tgt config linux_debian_12-gcc_12-bindist
timestamp 2025-09-04 23:13:22 UTC (02 18:16:01 days ago)
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toolchain public-0.17.0
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tgt config windows_10-msvc_17.8
timestamp 2025-09-04 23:13:16 UTC (02 18:16:08 days ago)
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toolchain public-0.17.0
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tgt config linux_debian_12-gcc_13
timestamp 2025-09-04 22:43:01 UTC (02 18:46:23 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 2025-09-04 22:17:07 UTC (02 19:12:17 days ago)
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timestamp 2025-09-04 22:08:33 UTC (02 19:20:50 days ago)
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toolchain public-0.17.0
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tgt config windows_10-gcc_13.2_mingw_w64
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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 2025-09-04 21:59:19 UTC (02 19:30:05 days ago)
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toolchain public-0.17.0
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tgt config freebsd_13-clang_17
timestamp 2025-09-04 21:46:50 UTC (02 19:42:34 days ago)
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toolchain public-0.17.0
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tgt config freebsd_14-clang_18-static_O3
timestamp 2025-09-04 21:45:26 UTC (02 19:43:57 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 2025-09-04 21:45:20 UTC (02 19:44:03 days ago)
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toolchain public-0.17.0
target x86_64-linux-gnu
tgt config linux_debian_12-gcc_13.1
timestamp 2025-09-04 21:44:01 UTC (02 19:45:23 days ago)
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toolchain public-0.17.0
target x86_64-freebsd14.1
tgt config freebsd_14-clang_18-O3
timestamp 2025-09-04 21:43:12 UTC (02 19:46:12 days ago)
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toolchain public-0.17.0
target x86_64-linux-gnu
tgt config linux_debian_12-clang_17
timestamp 2025-09-04 21:41:47 UTC (02 19:47:36 days ago)
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toolchain public-0.17.0
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tgt config freebsd_14-clang_18
timestamp 2025-09-04 21:40:03 UTC (02 19:49:21 days ago)
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toolchain public-0.17.0
target x86_64-linux-gnu
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result unbuilt
toolchain public-0.17.0
target x86_64-linux-gnu
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toolchain public-0.17.0
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toolchain public-0.17.0
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toolchain public-0.17.0
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toolchain public-0.17.0
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target x86_64-linux-gnu
tgt config linux_fedora_39-gcc_13-bindist
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toolchain public-0.17.0
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result excluded (https://github)
target x86_64-apple-darwin23.5.0
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