tl-optional/1.1.0+1

C++11/14/17 std::optional with functional-style extensions and reference support

Single header implementation of std::optional with functional-style extensions and support for references.

Clang + GCC: MSVC:

std::optional is the preferred way to represent an object which may or may not have a value. Unfortunately, chaining together many computations which may or may not produce a value can be verbose, as empty-checking code will be mixed in with the actual programming logic. This implementation provides a number of utilities to make coding with optional cleaner.

For example, instead of writing this code:

... More

version	1.1.0+1
license	CC0-1.0 UniversalCreative Commons Zero v1.0 Universal
repository	https://pkg.cppget.org/1/stable
download	tl-optional-1.1.0+1.tar.gz
sha256	d272e8b790ac502baee6f6901fb510cd779d144bfdb44de25ffc27ae6e7f35c8

project	tl
doc-url	tl.tartanllama.xyz/en/latest/
package-url	github.com/build2-packaging/build2-tl
package-email	wmbat-dev@protonmail.com

Requires (1)

	c++ >= 11

Tests

	tl-optional-tests == 1.1.0

Reviews

fail	0
pass	1

Builds

toolchain	public-0.17.0
target	x86_64-linux-gnu
tgt config	linux_fedora_40-gcc_14-bindist
timestamp	2025-09-10 06:20:42 UTC (04:00:14 hours ago)
result	success \| log \| rebuild

toolchain	public-0.17.0
target	aarch64-linux-gnu
tgt config	linux_debian_12-gcc_13
timestamp	2025-09-09 15:20:58 UTC (18:59:57 hours ago)
result	success \| log \| rebuild

toolchain	public-0.17.0
target	aarch64-linux-gnu
tgt config	linux_debian_12-clang_17_libc++
timestamp	2025-09-09 11:27:00 UTC (22:53:56 hours ago)
result	warning (test) \| warning (test-installed) \| log \| rebuild

toolchain	public-0.17.0
target	aarch64-linux-gnu
tgt config	linux_debian_12-clang_17
timestamp	2025-09-09 11:26:43 UTC (22:54:12 hours ago)
result	warning (test) \| warning (test-installed) \| log \| rebuild

toolchain	public-0.17.0
target	x86_64-linux-gnu
tgt config	linux_debian_12-gcc_14-ndebug_O3
timestamp	2025-09-09 03:01:03 UTC (01 07:19:53 days ago)
result	success \| log \| rebuild

toolchain	public-0.17.0
target	x86_64-linux-gnu
tgt config	linux_debian_12-gcc_14-static_O3
timestamp	2025-09-09 02:54:37 UTC (01 07:26:18 days ago)
result	success \| log \| rebuild

toolchain	public-0.17.0
target	x86_64-linux-gnu
tgt config	linux_debian_12-gcc_14-O3
timestamp	2025-09-09 02:35:46 UTC (01 07:45:09 days ago)
result	success \| log \| rebuild

toolchain	public-0.17.0
target	x86_64-linux-gnu
tgt config	linux_debian_12-gcc_14
timestamp	2025-09-09 02:08:09 UTC (01 08:12:47 days ago)
result	success \| log \| rebuild

toolchain	public-0.17.0
target	x86_64-w64-mingw32
tgt config	windows_10-gcc_13.2_mingw_w64-O2
timestamp	2025-09-09 00:32:20 UTC (01 09:48:35 days ago)
result	success \| log \| rebuild

toolchain	public-0.17.0
target	x86_64-w64-mingw32
tgt config	windows_10-gcc_13.2_mingw_w64-static_O2
timestamp	2025-09-09 00:30:50 UTC (01 09:50:05 days ago)
result	success \| log \| rebuild

toolchain	public-0.17.0
target	x86_64-linux-gnu
tgt config	linux_debian_12-gcc_12-bindist
timestamp	2025-09-09 00:29:55 UTC (01 09:51:01 days ago)
result	success \| log \| rebuild

toolchain	public-0.17.0
target	x86_64-linux-gnu
tgt config	linux_ubuntu_24.04-gcc_13-bindist
timestamp	2025-09-09 00:26:28 UTC (01 09:54:28 days ago)
result	success \| log \| rebuild

toolchain	public-0.17.0
target	x86_64-w64-mingw32
tgt config	windows_10-gcc_13.2_mingw_w64
timestamp	2025-09-09 00:23:11 UTC (01 09:57:44 days ago)
result	success \| log \| rebuild

toolchain	public-0.17.0
target	x86_64-linux-gnu
tgt config	linux_debian_12-gcc_13.1
timestamp	2025-09-08 23:37:18 UTC (01 10:43:38 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	2025-09-08 20:37:56 UTC (01 13:42:59 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	2025-09-08 20:20:29 UTC (01 14:00:27 days ago)
result	success \| log \| rebuild

toolchain	public-0.17.0
target	aarch64-linux-gnu
tgt config	linux_debian_12-gcc_14-O3
timestamp	2025-09-08 20:19:53 UTC (01 14:01:02 days ago)
result	success \| log \| rebuild

toolchain	public-0.17.0
target	aarch64-linux-gnu
tgt config	linux_debian_12-gcc_14
timestamp	2025-09-08 20:14:07 UTC (01 14:06:49 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	2025-09-08 15:40:28 UTC (01 18:40:28 days ago)
result	warning (test) \| warning (test-installed) \| log \| rebuild

toolchain	public-0.17.0
target	aarch64-linux-gnu
tgt config	linux_debian_12-clang_18-O3
timestamp	2025-09-08 15:34:58 UTC (01 18:45:58 days ago)
result	warning (test) \| warning (test-installed) \| log \| rebuild

toolchain	public-0.17.0
target	aarch64-linux-gnu
tgt config	linux_debian_12-clang_18_libc++
timestamp	2025-09-08 15:33:31 UTC (01 18:47:25 days ago)
result	warning (test) \| warning (test-installed) \| log \| rebuild

toolchain	public-0.17.0
target	aarch64-linux-gnu
tgt config	linux_debian_12-clang_18_libc++-O3
timestamp	2025-09-08 15:33:10 UTC (01 18:47:46 days ago)
result	warning (test) \| warning (test-installed) \| log \| rebuild

toolchain	public-0.17.0
target	aarch64-linux-gnu
tgt config	linux_debian_12-clang_18-static_O3
timestamp	2025-09-08 15:29:44 UTC (01 18:51:11 days ago)
result	warning (test) \| warning (test-installed) \| log \| rebuild

toolchain	public-0.17.0
target	aarch64-linux-gnu
tgt config	linux_debian_12-clang_18
timestamp	2025-09-08 15:29:03 UTC (01 18:51:52 days ago)
result	warning (test) \| warning (test-installed) \| log \| rebuild

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	2025-09-08 15:14:24 UTC (01 19:06:31 days ago)
result	warning (test) \| warning (test-installed) \| log \| rebuild

toolchain	public-0.17.0
target	x86_64-microsoft-win32-msvc14.3
tgt config	windows_10-clang_18_llvm_msvc_17.10-O2
timestamp	2025-09-08 15:07:54 UTC (01 19:13:02 days ago)
result	warning (test) \| warning (test-installed) \| log \| rebuild

toolchain	public-0.17.0
target	x86_64-microsoft-win32-msvc14.3
tgt config	windows_10-clang_18_llvm_msvc_17.10
timestamp	2025-09-08 15:06:16 UTC (01 19:14:40 days ago)
result	warning (test) \| warning (test-installed) \| log \| rebuild

toolchain	public-0.17.0
target	x86_64-microsoft-win32-msvc14.3
tgt config	windows_10-clang_17_msvc_msvc_17.10
timestamp	2025-09-07 23:12:58 UTC (02 11:07:58 days ago)
result	warning (test) \| warning (test-installed) \| log \| rebuild

toolchain	public-0.17.0
target	x86_64-microsoft-win32-msvc14.3
tgt config	windows_10-msvc_17.10-O2
timestamp	2025-09-07 23:11:42 UTC (02 11:09:14 days ago)
result	warning (test) \| warning (test-installed) \| log \| rebuild

toolchain	public-0.17.0
target	x86_64-microsoft-win32-msvc14.3
tgt config	windows_10-msvc_17.10-static_O2
timestamp	2025-09-07 23:10:57 UTC (02 11:09:59 days ago)
result	warning (test) \| warning (test-installed) \| log \| rebuild

toolchain	public-0.17.0
target	x86_64-microsoft-win32-msvc14.3
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timestamp	2025-09-07 23:09:48 UTC (02 11:11:07 days ago)
result	warning (test) \| warning (test-installed) \| log \| rebuild

toolchain	public-0.17.0
target	x86_64-microsoft-win32-msvc14.3
tgt config	windows_10-msvc_17.10
timestamp	2025-09-07 23:09:27 UTC (02 11:11:28 days ago)
result	warning (test) \| warning (test-installed) \| log \| rebuild

toolchain	public-0.17.0
target	x86_64-microsoft-win32-msvc14.3
tgt config	windows_10-msvc_17.8-O2
timestamp	2025-09-07 23:07:56 UTC (02 11:13:00 days ago)
result	warning (test) \| warning (test-installed) \| log \| rebuild

toolchain	public-0.17.0
target	x86_64-microsoft-win32-msvc14.3
tgt config	windows_10-msvc_17.8
timestamp	2025-09-07 23:06:31 UTC (02 11:14:25 days ago)
result	warning (test) \| warning (test-installed) \| log \| rebuild

toolchain	public-0.17.0
target	x86_64-freebsd14.1
tgt config	freebsd_14-clang_18-static_O3
timestamp	2025-09-07 22:51:03 UTC (02 11:29:53 days ago)
result	warning (test) \| warning (test-installed) \| log \| rebuild

toolchain	public-0.17.0
target	x86_64-freebsd13.3
tgt config	freebsd_13-clang_17
timestamp	2025-09-07 22:48:14 UTC (02 11:32:41 days ago)
result	warning (test) \| warning (test-installed) \| log \| rebuild

toolchain	public-0.17.0
target	x86_64-freebsd14.1
tgt config	freebsd_14-clang_18-O3
timestamp	2025-09-07 22:48:14 UTC (02 11:32:42 days ago)
result	warning (test) \| warning (test-installed) \| log \| rebuild

toolchain	public-0.17.0
target	x86_64-freebsd14.1
tgt config	freebsd_14-clang_18
timestamp	2025-09-07 22:44:32 UTC (02 11:36:23 days ago)
result	warning (test) \| warning (test-installed) \| log \| rebuild

toolchain	public-0.17.0
target	x86_64-linux-gnu
tgt config	linux_debian_12-clang_17_libc++
timestamp	2025-09-07 22:41:42 UTC (02 11:39:14 days ago)
result	warning (test) \| warning (test-installed) \| log \| rebuild

toolchain	public-0.17.0
target	x86_64-linux-gnu
tgt config	linux_debian_12-clang_17
timestamp	2025-09-07 22:39:10 UTC (02 11:41:45 days ago)
result	warning (test) \| warning (test-installed) \| log \| rebuild

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
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toolchain	public-0.17.0
target	x86_64-linux-gnu
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toolchain	public-0.17.0
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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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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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toolchain	public-0.17.0
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