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-microsoft-win32-msvc14.3
tgt config	windows_10-clang_17_msvc_msvc_17.10
timestamp	2025-09-24 12:59:45 UTC (19:14:06 hours 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	2025-09-24 12:59:03 UTC (19:14:49 hours 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	2025-09-24 12:58:16 UTC (19:15:35 hours 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-static_O2
timestamp	2025-09-24 12:58:00 UTC (19:15:51 hours 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	2025-09-24 12:56:21 UTC (19:17:30 hours 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	2025-09-24 12:55:55 UTC (19:17:56 hours 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	2025-09-24 12:55:19 UTC (19:18:33 hours 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	2025-09-24 12:35:09 UTC (19:38:42 hours ago)
result	warning (test) \| warning (test-installed) \| log \| rebuild

toolchain	public-0.17.0
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timestamp	2025-09-24 12:35:07 UTC (19:38:45 hours 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	2025-09-24 12:33:28 UTC (19:40:24 hours ago)
result	warning (test) \| warning (test-installed) \| log \| rebuild

toolchain	public-0.17.0
target	x86_64-freebsd14.1
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timestamp	2025-09-24 12:31:32 UTC (19:42:19 hours ago)
result	warning (test) \| warning (test-installed) \| log \| rebuild

toolchain	public-0.17.0
target	x86_64-linux-gnu
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timestamp	2025-09-24 12:30:59 UTC (19:42:52 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-clang_17
timestamp	2025-09-24 12:29:25 UTC (19:44:27 hours ago)
result	warning (test) \| warning (test-installed) \| log \| rebuild

toolchain	public-0.17.0
target	x86_64-linux-gnu
tgt config	linux_fedora_40-gcc_14-bindist
timestamp	2025-09-24 06:37:47 UTC (01 01:36:05 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	2025-09-24 02:09:05 UTC (01 06:04:46 days ago)
result	success \| log \| rebuild

toolchain	public-0.17.0
target	aarch64-linux-gnu
tgt config	linux_debian_12-gcc_14-O3
timestamp	2025-09-24 01:57:25 UTC (01 06:16:26 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	2025-09-24 01:56:21 UTC (01 06:17:30 days ago)
result	success \| log \| rebuild

toolchain	public-0.17.0
target	aarch64-linux-gnu
tgt config	linux_debian_12-gcc_14
timestamp	2025-09-24 01:54:38 UTC (01 06:19:13 days ago)
result	success \| log \| rebuild

toolchain	public-0.17.0
target	aarch64-linux-gnu
tgt config	linux_debian_12-gcc_13
timestamp	2025-09-23 16:46:11 UTC (01 15:27:41 days ago)
result	success \| log \| rebuild

toolchain	public-0.17.0
target	aarch64-linux-gnu
tgt config	linux_debian_12-clang_17
timestamp	2025-09-23 11:48:21 UTC (01 20:25:31 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_17_libc++
timestamp	2025-09-23 11:47:43 UTC (01 20:26:08 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-gcc_14-static_O3
timestamp	2025-09-23 03:12:31 UTC (02 05:01:20 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	2025-09-23 02:58:57 UTC (02 05:14:55 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	2025-09-23 02:54:41 UTC (02 05:19:11 days ago)
result	success \| log \| rebuild

toolchain	public-0.17.0
target	x86_64-linux-gnu
tgt config	linux_debian_12-gcc_14
timestamp	2025-09-23 02:51:16 UTC (02 05:22:36 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	2025-09-23 00:56:43 UTC (02 07:17:09 days ago)
result	success \| log \| rebuild

toolchain	public-0.17.0
target	x86_64-linux-gnu
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timestamp	2025-09-23 00:52:43 UTC (02 07:21:08 days ago)
result	success \| log \| rebuild

toolchain	public-0.17.0
target	x86_64-w64-mingw32
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timestamp	2025-09-23 00:52:24 UTC (02 07:21:28 days ago)
result	success \| log \| rebuild

toolchain	public-0.17.0
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timestamp	2025-09-23 00:50:35 UTC (02 07:23:16 days ago)
result	success \| log \| rebuild

toolchain	public-0.17.0
target	x86_64-w64-mingw32
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timestamp	2025-09-23 00:48:46 UTC (02 07:25:06 days ago)
result	success \| log \| rebuild

toolchain	public-0.17.0
target	x86_64-linux-gnu
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timestamp	2025-09-23 00:00:03 UTC (02 08:13:49 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	2025-09-22 15:43:13 UTC (02 16:30:38 days ago)
result	warning (test) \| warning (test-installed) \| log \| rebuild

toolchain	public-0.17.0
target	aarch64-linux-gnu
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timestamp	2025-09-22 15:35:44 UTC (02 16:38:08 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	2025-09-22 15:34:13 UTC (02 16:39:38 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	2025-09-22 15:32:50 UTC (02 16:41:01 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	2025-09-22 15:31:35 UTC (02 16:42:17 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	2025-09-22 15:27:33 UTC (02 16:46:19 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	2025-09-22 15:27:05 UTC (02 16:46:47 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	2025-09-22 15:24:26 UTC (02 16:49:25 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	2025-09-22 15:15:54 UTC (02 16:57:58 days ago)
result	warning (test) \| warning (test-installed) \| log \| rebuild

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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