tl-optional/1.0.0

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	1.0.0
license	CC0 1.0 UniversalCreative Commons Zero v1.0 Universal
repository	https://pkg.cppget.org/1/stable
download	tl-optional-1.0.0.tar.gz
sha256	c53516bd333e81669e59aeff2f086a5d1fd8a9f36f3db07b18383dee985f1d05

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 == 1.0.0

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 06:20:00 UTC (03:54:12 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 15:21:33 UTC (18:52:39 hours ago)
result	success \| log \| rebuild

toolchain	public-0.17.0
target	aarch64-linux-gnu
tgt config	linux_debian_12-clang_17
timestamp	2025-09-09 11:27:13 UTC (22:47:00 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_libc++
timestamp	2025-09-09 11:26:28 UTC (22:47:44 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-static_O3
timestamp	2025-09-09 02:23:21 UTC (01 07:50:52 days ago)
result	success \| 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 02:16:41 UTC (01 07:57:31 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 02:11:22 UTC (01 08:02:50 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 02:09:16 UTC (01 08:04:57 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 00:29:28 UTC (01 09:44:44 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 00:25:53 UTC (01 09:48:19 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 00:25:45 UTC (01 09:48:27 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 00:24:08 UTC (01 09:50:04 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 00:22:11 UTC (01 09:52:01 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 23:36:09 UTC (01 10:38:03 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 20:21:34 UTC (01 13:52:38 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 20:15:11 UTC (01 13:59:02 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 20:14:39 UTC (01 13:59:33 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 20:12:52 UTC (01 14:01:20 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 15:31:43 UTC (01 18:42:29 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 15:27:49 UTC (01 18:46:24 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 15:26:24 UTC (01 18:47:49 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 15:24:57 UTC (01 18:49:15 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 15:23:39 UTC (01 18:50:34 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 15:18:54 UTC (01 18:55:18 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 15:11:42 UTC (01 19:02:31 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 15:09:27 UTC (01 19:04:45 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 15:04:47 UTC (01 19:09:26 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 23:10:39 UTC (02 11:03:33 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 23:09:52 UTC (02 11:04:20 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 23:08:36 UTC (02 11:05:36 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 23:07:43 UTC (02 11:06:30 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 23:05:19 UTC (02 11:08:54 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 23:04:52 UTC (02 11:09:20 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 23:03:04 UTC (02 11:11:08 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 22:47:25 UTC (02 11:26:47 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 22:46:53 UTC (02 11:27:19 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 22:44:17 UTC (02 11:29:55 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 22:41:23 UTC (02 11:32:50 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 22:40:55 UTC (02 11:33:18 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 22:38:15 UTC (02 11:35:57 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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