libboost-optional/1.87.0

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
email	boost-users@lists.boost.orgMailing list
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

fail	0
pass	1

Builds

toolchain	public-0.18.1
target	aarch64-linux-gnu
tgt config	linux_debian_12-gcc_13
timestamp	2026-10-08 12:13:03 UTC (06:46:38 hours ago)
result	success \| log \| rebuild

toolchain	public-0.18.1
target	x86_64-linux-gnu
tgt config	linux_fedora_43-gcc_15-bindist
timestamp	2026-10-07 11:16:09 UTC (01 07:43:32 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	2026-10-07 00:49:56 UTC (01 18:09:45 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	2026-10-07 00:46:13 UTC (01 18:13:29 days ago)
result	success \| log \| rebuild

toolchain	public-0.18.1
target	x86_64-microsoft-win32-msvc14.5
tgt config	windows_10-msvc_18
timestamp	2026-10-07 00:45:00 UTC (01 18:14:41 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	2026-10-07 00:11:55 UTC (01 18:47:46 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	2026-10-07 00:11:24 UTC (01 18:48:17 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	2026-10-07 00:10:13 UTC (01 18:49:29 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	2026-10-04 01:44:32 UTC (04 17:15:09 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	2026-10-04 01:43:21 UTC (04 17:16:20 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	2026-10-04 01:40:07 UTC (04 17:19:34 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	2026-10-03 21:13:50 UTC (04 21:45:52 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	2026-10-03 05:45:18 UTC (05 13:14:23 days ago)
result	error (configure) \| log \| rebuild

toolchain	public-0.18.1
target	x86_64-apple-darwin23.5.0
tgt config	macos_14-clang_15.0-O3
timestamp	2026-10-03 05:39:56 UTC (05 13:19:45 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	2026-10-03 05:38:36 UTC (05 13:21:05 days ago)
result	success \| log \| rebuild

toolchain	public-0.18.1
target	x86_64-linux-gnu
tgt config	linux_fedora_44-gcc_16-bindist
timestamp	2026-09-30 19:26:08 UTC (07 23:33:33 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	2026-09-27 06:27:11 UTC (11 12:32:30 days ago)
result	success \| log \| rebuild

toolchain	public-0.18.1
target	aarch64-linux-gnu
tgt config	linux_debian_12-clang_18_libc++
timestamp	2026-09-27 06:25:49 UTC (11 12:33:53 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	2026-09-27 06:25:45 UTC (11 12:33:56 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	2026-09-27 06:24:45 UTC (11 12:34:56 days ago)
result	success \| log \| rebuild

toolchain	public-0.18.1
target	aarch64-linux-gnu
tgt config	linux_debian_12-clang_18-O3
timestamp	2026-09-27 06:24:26 UTC (11 12:35:15 days ago)
result	success \| log \| rebuild

toolchain	public-0.18.1
target	aarch64-linux-gnu
tgt config	linux_debian_12-clang_18
timestamp	2026-09-27 06:23:37 UTC (11 12:36:04 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 17:11:55 UTC (12 01:47:46 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	2026-09-26 02:42:44 UTC (12 16:16:58 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	2026-09-26 02:42:29 UTC (12 16:17:12 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	2026-09-26 02:41:45 UTC (12 16:17:57 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	2026-09-26 02:41:38 UTC (12 16:18:03 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	2026-09-26 02:40:57 UTC (12 16:18:45 days ago)
result	success \| log \| rebuild

toolchain	public-0.18.1
target	x86_64-linux-gnu
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timestamp	2026-09-26 02:40:46 UTC (12 16:18:55 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	2026-09-25 23:50:52 UTC (12 19:08:49 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	2026-09-25 22:23:26 UTC (12 20:36:15 days ago)
result	success \| log \| rebuild

toolchain	public-0.18.1
target	x86_64-linux-gnu
tgt config	linux_debian_13-gcc_16
timestamp	2026-09-25 22:22:54 UTC (12 20:36:48 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	2026-09-25 14:00:27 UTC (13 04:59:14 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	2026-09-25 13:59:54 UTC (13 04:59:47 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	2026-09-25 13:50:00 UTC (13 05:09:41 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	2026-09-25 13:46:43 UTC (13 05:12:59 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	2026-09-25 13:46:09 UTC (13 05:13:33 days ago)
result	success \| log \| rebuild

toolchain	public-0.18.1
target	aarch64-linux-gnu
tgt config	linux_debian_12-gcc_14-O3
timestamp	2026-09-25 13:45:55 UTC (13 05:13:46 days ago)
result	success \| log \| rebuild

toolchain	public-0.18.1
target	aarch64-linux-gnu
tgt config	linux_debian_12-gcc_14
timestamp	2026-09-25 13:45:37 UTC (13 05:14:04 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	2026-09-25 13:40:16 UTC (13 05:19:25 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	2026-09-25 13:36:43 UTC (13 05:22:58 days ago)
result	success \| log \| rebuild

toolchain	public-0.18.1
target	x86_64-freebsd15.0
tgt config	freebsd_15-clang_19-O3
timestamp	2026-09-25 13:36:03 UTC (13 05:23:38 days ago)
result	success \| log \| rebuild

toolchain	public-0.18.1
target	x86_64-freebsd15.0
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timestamp	2026-09-25 13:36:03 UTC (13 05:23:39 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	2026-09-25 13:33:07 UTC (13 05:26:34 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	2026-09-25 13:32:35 UTC (13 05:27:07 days ago)
result	success \| log \| rebuild

toolchain	public-0.18.1
target	x86_64-linux-gnu
tgt config	linux_debian_13-gcc_15
timestamp	2026-09-25 13:32:26 UTC (13 05:27:15 days ago)
result	success \| log \| rebuild

toolchain	public-0.18.1
target	x86_64-linux-gnu
tgt config	linux_debian_13-clang_21
timestamp	2026-09-25 13:32:14 UTC (13 05:27:27 days ago)
result	success \| log \| rebuild

toolchain	public-0.18.1
target	x86_64-freebsd14.1
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timestamp	2026-09-25 13:31:34 UTC (13 05:28:07 days ago)
result	success \| log \| rebuild

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)

target	x86_64-apple-darwin23.5.0
tgt config	macos_14-gcc_14_homebrew-static_O3
result	excluded (https://github)