{"comments":[{"comment":{"id":15058855,"creator_id":1583532,"post_id":27974644,"content":"Without a much deep look at the code: any particular reason to not target also C++14?","removed":false,"published":"2025-06-25T13:50:42.959037Z","deleted":false,"ap_id":"https://lemmy.sdf.org/comment/20992570","local":false,"path":"0.15058855","distinguished":false,"language_id":37},"creator":{"id":1583532,"name":"lambalicious","banned":false,"published":"2023-07-26T01:05:35.094497Z","actor_id":"https://lemmy.sdf.org/u/lambalicious","bio":"**I write English / Escribo en Español.** \n\nVidya / videojuegos. Internet. Cats / Gatos. Pizza. Nap / Siesta.\n\nThis user's posts under [CC-BY-NC-SA license](http://creativecommons.org/licenses/by-nc-sa/4.0/). Ask me if you need a different permission.","local":false,"deleted":false,"bot_account":false,"instance_id":76551},"post":{"id":27974644,"name":"a small implementation for std::expected for C++11","url":"https://github.com/nodeluna/expected","body":"\n\n\n","creator_id":13457196,"community_id":4001,"removed":false,"locked":false,"published":"2025-06-24T13:55:42.039986Z","updated":"2025-06-27T12:20:21.229329Z","deleted":false,"nsfw":false,"embed_title":"GitHub - nodeluna/expected: an implementation of std::expected for C++11","embed_description":"an implementation of std::expected for C++11. Contribute to nodeluna/expected development by creating an account on GitHub.","thumbnail_url":"https://lemmy.blahaj.zone/pictrs/image/e5c053c0-1b1c-45f4-a92a-33900dbe4301.webp","ap_id":"https://programming.dev/post/32796641","local":false,"language_id":37,"featured_community":false,"featured_local":false,"url_content_type":"text/html; charset=utf-8"},"community":{"id":4001,"name":"cpp","title":"C++","description":"The center for all discussion and news regarding C++.\n# Rules\n- Respect instance rules.\n- Don't be a jerk.\n- Please keep all posts related to C++.","removed":false,"published":"2023-06-13T02:04:49.023156Z","updated":"2023-07-01T02:56:42.837217Z","deleted":false,"nsfw":false,"actor_id":"https://programming.dev/c/cpp","local":false,"icon":"https://programming.dev/pictrs/image/662a455d-1090-45ad-994e-302f8bfcd56e.png","banner":"https://programming.dev/pictrs/image/4cf9d39a-8171-4306-90d9-f9aecb80294e.jpeg","hidden":false,"posting_restricted_to_mods":false,"instance_id":79126,"visibility":"Public"},"counts":{"comment_id":15058855,"score":3,"upvotes":3,"downvotes":0,"published":"2025-06-25T13:50:42.959037Z","child_count":5},"creator_banned_from_community":false,"banned_from_community":false,"creator_is_moderator":false,"creator_is_admin":false,"subscribed":"NotSubscribed","saved":false,"creator_blocked":false},{"comment":{"id":15060047,"creator_id":13457196,"post_id":27974644,"content":"because \"if constexpr(...)\" is a c++17 feature which i'm using it to allow usage of nl::unexpected() to return a nl::expected to nl::expected in this copy constructor \n\n```cpp\ntemplate\nexpected(const expected& other) : _has_value(other.has_value()) // a copy constructor \n{\n if (_has_value)\n {\n if constexpr (std::is_same::value) // it checks if U == monostate\n {\n // makes an empty instance of \"T\"\n }\n else if constexpr (std::is_same::value) // it checks if U == T\n {\n // otherwise copies \"other._value\" into _value\n }\n else\n {\n static_assert(\n not std::is_same::value, \"no available conversion between the provided value types\");\n }\n }\n else\n {\n new (std::addressof(_error)) E(other.error());\n }\n}\n\n template\n expected unexpected(const E& e) // then this can covert to fine because of this copy constructor\n { \n return expected(e);\n }\n\n\n// example usage\n\nnl::expected meow = nl::unexpected(\"error\");\n```\n\n\nbut i could take a different approach and make 2 copy constructor one that explicitly takes\n```cpp\nexpected(const expected& other)\n```\nand another\n```cpp\nexpected(const expected& other)\n```\n\nI was also using \"std::is_same_v\" which is a c++17 feature instead \"std::is_same<>::value\" but i made a commit and changed it. it now compiles with c++14 but with c++17 extensions","removed":false,"published":"2025-06-25T15:05:00.557613Z","updated":"2025-06-25T15:39:30.958497Z","deleted":false,"ap_id":"https://programming.dev/comment/17758124","local":false,"path":"0.15058855.15060047","distinguished":false,"language_id":37},"creator":{"id":13457196,"name":"nodeluna","banned":false,"published":"2024-10-28T04:25:50.143795Z","actor_id":"https://programming.dev/u/nodeluna","bio":"https://github.com/nodeluna","local":false,"deleted":false,"bot_account":false,"instance_id":79126},"post":{"id":27974644,"name":"a small implementation for std::expected for C++11","url":"https://github.com/nodeluna/expected","body":"\n\n\n","creator_id":13457196,"community_id":4001,"removed":false,"locked":false,"published":"2025-06-24T13:55:42.039986Z","updated":"2025-06-27T12:20:21.229329Z","deleted":false,"nsfw":false,"embed_title":"GitHub - nodeluna/expected: an implementation of std::expected for C++11","embed_description":"an implementation of std::expected for C++11. Contribute to nodeluna/expected development by creating an account on GitHub.","thumbnail_url":"https://lemmy.blahaj.zone/pictrs/image/e5c053c0-1b1c-45f4-a92a-33900dbe4301.webp","ap_id":"https://programming.dev/post/32796641","local":false,"language_id":37,"featured_community":false,"featured_local":false,"url_content_type":"text/html; charset=utf-8"},"community":{"id":4001,"name":"cpp","title":"C++","description":"The center for all discussion and news regarding C++.\n# Rules\n- Respect instance rules.\n- Don't be a jerk.\n- Please keep all posts related to C++.","removed":false,"published":"2023-06-13T02:04:49.023156Z","updated":"2023-07-01T02:56:42.837217Z","deleted":false,"nsfw":false,"actor_id":"https://programming.dev/c/cpp","local":false,"icon":"https://programming.dev/pictrs/image/662a455d-1090-45ad-994e-302f8bfcd56e.png","banner":"https://programming.dev/pictrs/image/4cf9d39a-8171-4306-90d9-f9aecb80294e.jpeg","hidden":false,"posting_restricted_to_mods":false,"instance_id":79126,"visibility":"Public"},"counts":{"comment_id":15060047,"score":2,"upvotes":2,"downvotes":0,"published":"2025-06-25T15:05:00.557613Z","child_count":4},"creator_banned_from_community":false,"banned_from_community":false,"creator_is_moderator":false,"creator_is_admin":false,"subscribed":"NotSubscribed","saved":false,"creator_blocked":false},{"comment":{"id":15064707,"creator_id":1583532,"post_id":27974644,"content":"That ``if constexpr`` in the case you mention does make the constructor clean as heck. Thanks for the clarification and the commits, by the way!\n\n","removed":false,"published":"2025-06-25T20:18:02.618723Z","deleted":false,"ap_id":"https://lemmy.sdf.org/comment/21000590","local":false,"path":"0.15058855.15060047.15064707","distinguished":false,"language_id":37},"creator":{"id":1583532,"name":"lambalicious","banned":false,"published":"2023-07-26T01:05:35.094497Z","actor_id":"https://lemmy.sdf.org/u/lambalicious","bio":"**I write English / Escribo en Español.** \n\nVidya / videojuegos. Internet. Cats / Gatos. Pizza. Nap / Siesta.\n\nThis user's posts under [CC-BY-NC-SA license](http://creativecommons.org/licenses/by-nc-sa/4.0/). Ask me if you need a different permission.","local":false,"deleted":false,"bot_account":false,"instance_id":76551},"post":{"id":27974644,"name":"a small implementation for std::expected for C++11","url":"https://github.com/nodeluna/expected","body":"\n\n\n","creator_id":13457196,"community_id":4001,"removed":false,"locked":false,"published":"2025-06-24T13:55:42.039986Z","updated":"2025-06-27T12:20:21.229329Z","deleted":false,"nsfw":false,"embed_title":"GitHub - nodeluna/expected: an implementation of std::expected for C++11","embed_description":"an implementation of std::expected for C++11. Contribute to nodeluna/expected development by creating an account on GitHub.","thumbnail_url":"https://lemmy.blahaj.zone/pictrs/image/e5c053c0-1b1c-45f4-a92a-33900dbe4301.webp","ap_id":"https://programming.dev/post/32796641","local":false,"language_id":37,"featured_community":false,"featured_local":false,"url_content_type":"text/html; charset=utf-8"},"community":{"id":4001,"name":"cpp","title":"C++","description":"The center for all discussion and news regarding C++.\n# Rules\n- Respect instance rules.\n- Don't be a jerk.\n- Please keep all posts related to C++.","removed":false,"published":"2023-06-13T02:04:49.023156Z","updated":"2023-07-01T02:56:42.837217Z","deleted":false,"nsfw":false,"actor_id":"https://programming.dev/c/cpp","local":false,"icon":"https://programming.dev/pictrs/image/662a455d-1090-45ad-994e-302f8bfcd56e.png","banner":"https://programming.dev/pictrs/image/4cf9d39a-8171-4306-90d9-f9aecb80294e.jpeg","hidden":false,"posting_restricted_to_mods":false,"instance_id":79126,"visibility":"Public"},"counts":{"comment_id":15064707,"score":2,"upvotes":2,"downvotes":0,"published":"2025-06-25T20:18:02.618723Z","child_count":3},"creator_banned_from_community":false,"banned_from_community":false,"creator_is_moderator":false,"creator_is_admin":false,"subscribed":"NotSubscribed","saved":false,"creator_blocked":false},{"comment":{"id":15072030,"creator_id":13457196,"post_id":27974644,"content":"ikr, constexpr is pretty cool. sure, no problem. I could make it fully compatible with c++14 without c++17 extensions if u wanna use it with c++14","removed":false,"published":"2025-06-26T08:31:00.732020Z","deleted":false,"ap_id":"https://programming.dev/comment/17773069","local":false,"path":"0.15058855.15060047.15064707.15072030","distinguished":false,"language_id":37},"creator":{"id":13457196,"name":"nodeluna","banned":false,"published":"2024-10-28T04:25:50.143795Z","actor_id":"https://programming.dev/u/nodeluna","bio":"https://github.com/nodeluna","local":false,"deleted":false,"bot_account":false,"instance_id":79126},"post":{"id":27974644,"name":"a small implementation for std::expected for C++11","url":"https://github.com/nodeluna/expected","body":"\n\n\n","creator_id":13457196,"community_id":4001,"removed":false,"locked":false,"published":"2025-06-24T13:55:42.039986Z","updated":"2025-06-27T12:20:21.229329Z","deleted":false,"nsfw":false,"embed_title":"GitHub - nodeluna/expected: an implementation of std::expected for C++11","embed_description":"an implementation of std::expected for C++11. Contribute to nodeluna/expected development by creating an account on GitHub.","thumbnail_url":"https://lemmy.blahaj.zone/pictrs/image/e5c053c0-1b1c-45f4-a92a-33900dbe4301.webp","ap_id":"https://programming.dev/post/32796641","local":false,"language_id":37,"featured_community":false,"featured_local":false,"url_content_type":"text/html; charset=utf-8"},"community":{"id":4001,"name":"cpp","title":"C++","description":"The center for all discussion and news regarding C++.\n# Rules\n- Respect instance rules.\n- Don't be a jerk.\n- Please keep all posts related to C++.","removed":false,"published":"2023-06-13T02:04:49.023156Z","updated":"2023-07-01T02:56:42.837217Z","deleted":false,"nsfw":false,"actor_id":"https://programming.dev/c/cpp","local":false,"icon":"https://programming.dev/pictrs/image/662a455d-1090-45ad-994e-302f8bfcd56e.png","banner":"https://programming.dev/pictrs/image/4cf9d39a-8171-4306-90d9-f9aecb80294e.jpeg","hidden":false,"posting_restricted_to_mods":false,"instance_id":79126,"visibility":"Public"},"counts":{"comment_id":15072030,"score":2,"upvotes":2,"downvotes":0,"published":"2025-06-26T08:31:00.732020Z","child_count":2},"creator_banned_from_community":false,"banned_from_community":false,"creator_is_moderator":false,"creator_is_admin":false,"subscribed":"NotSubscribed","saved":false,"creator_blocked":false},{"comment":{"id":15083134,"creator_id":1583532,"post_id":27974644,"content":"I mean, I am not too concerned and it is your code. The ``if constexpr`` is just so much spiffier. You should do what's best for you.\n\nMy own use case is that for pre-C++23 (and in particular, pre-C++20) workflows I'm looking to homogeneize the set of dependencies used to supplement the standard library and this looks like a great candidate lib. I already have my own ``expected``, actually, but would rather someone else's who knows what they're doing. Since C++14 is the oldest standard I have to support *directly* for clients (big improvement: was C++03 before 2021) and it brought in the big changes that made ``constexpr`` actually usable, I treat C++14 as a a sorta \"C++ LTS\" in my codebase.\n\n","removed":false,"published":"2025-06-26T22:03:23.014880Z","deleted":false,"ap_id":"https://lemmy.sdf.org/comment/21027660","local":false,"path":"0.15058855.15060047.15064707.15072030.15083134","distinguished":false,"language_id":37},"creator":{"id":1583532,"name":"lambalicious","banned":false,"published":"2023-07-26T01:05:35.094497Z","actor_id":"https://lemmy.sdf.org/u/lambalicious","bio":"**I write English / Escribo en Español.** \n\nVidya / videojuegos. Internet. Cats / Gatos. Pizza. Nap / Siesta.\n\nThis user's posts under [CC-BY-NC-SA license](http://creativecommons.org/licenses/by-nc-sa/4.0/). Ask me if you need a different permission.","local":false,"deleted":false,"bot_account":false,"instance_id":76551},"post":{"id":27974644,"name":"a small implementation for std::expected for C++11","url":"https://github.com/nodeluna/expected","body":"\n\n\n","creator_id":13457196,"community_id":4001,"removed":false,"locked":false,"published":"2025-06-24T13:55:42.039986Z","updated":"2025-06-27T12:20:21.229329Z","deleted":false,"nsfw":false,"embed_title":"GitHub - nodeluna/expected: an implementation of std::expected for C++11","embed_description":"an implementation of std::expected for C++11. Contribute to nodeluna/expected development by creating an account on GitHub.","thumbnail_url":"https://lemmy.blahaj.zone/pictrs/image/e5c053c0-1b1c-45f4-a92a-33900dbe4301.webp","ap_id":"https://programming.dev/post/32796641","local":false,"language_id":37,"featured_community":false,"featured_local":false,"url_content_type":"text/html; charset=utf-8"},"community":{"id":4001,"name":"cpp","title":"C++","description":"The center for all discussion and news regarding C++.\n# Rules\n- Respect instance rules.\n- Don't be a jerk.\n- Please keep all posts related to C++.","removed":false,"published":"2023-06-13T02:04:49.023156Z","updated":"2023-07-01T02:56:42.837217Z","deleted":false,"nsfw":false,"actor_id":"https://programming.dev/c/cpp","local":false,"icon":"https://programming.dev/pictrs/image/662a455d-1090-45ad-994e-302f8bfcd56e.png","banner":"https://programming.dev/pictrs/image/4cf9d39a-8171-4306-90d9-f9aecb80294e.jpeg","hidden":false,"posting_restricted_to_mods":false,"instance_id":79126,"visibility":"Public"},"counts":{"comment_id":15083134,"score":2,"upvotes":2,"downvotes":0,"published":"2025-06-26T22:03:23.014880Z","child_count":1},"creator_banned_from_community":false,"banned_from_community":false,"creator_is_moderator":false,"creator_is_admin":false,"subscribed":"NotSubscribed","saved":false,"creator_blocked":false},{"comment":{"id":15090995,"creator_id":13457196,"post_id":27974644,"content":"alright then.\n\nI see. ``expected`` is such a great library to have regardless of the standard version.\noh c++03, I'm not familiar with that standard.\n\n\nI enabled support for c++11 regardless, it's kinda cool to do so","removed":false,"published":"2025-06-27T12:19:59.040016Z","updated":"2025-06-27T12:27:15.955160Z","deleted":false,"ap_id":"https://programming.dev/comment/17796478","local":false,"path":"0.15058855.15060047.15064707.15072030.15083134.15090995","distinguished":false,"language_id":37},"creator":{"id":13457196,"name":"nodeluna","banned":false,"published":"2024-10-28T04:25:50.143795Z","actor_id":"https://programming.dev/u/nodeluna","bio":"https://github.com/nodeluna","local":false,"deleted":false,"bot_account":false,"instance_id":79126},"post":{"id":27974644,"name":"a small implementation for std::expected for C++11","url":"https://github.com/nodeluna/expected","body":"\n\n\n","creator_id":13457196,"community_id":4001,"removed":false,"locked":false,"published":"2025-06-24T13:55:42.039986Z","updated":"2025-06-27T12:20:21.229329Z","deleted":false,"nsfw":false,"embed_title":"GitHub - nodeluna/expected: an implementation of std::expected for C++11","embed_description":"an implementation of std::expected for C++11. Contribute to nodeluna/expected development by creating an account on GitHub.","thumbnail_url":"https://lemmy.blahaj.zone/pictrs/image/e5c053c0-1b1c-45f4-a92a-33900dbe4301.webp","ap_id":"https://programming.dev/post/32796641","local":false,"language_id":37,"featured_community":false,"featured_local":false,"url_content_type":"text/html; charset=utf-8"},"community":{"id":4001,"name":"cpp","title":"C++","description":"The center for all discussion and news regarding C++.\n# Rules\n- Respect instance rules.\n- Don't be a jerk.\n- Please keep all posts related to C++.","removed":false,"published":"2023-06-13T02:04:49.023156Z","updated":"2023-07-01T02:56:42.837217Z","deleted":false,"nsfw":false,"actor_id":"https://programming.dev/c/cpp","local":false,"icon":"https://programming.dev/pictrs/image/662a455d-1090-45ad-994e-302f8bfcd56e.png","banner":"https://programming.dev/pictrs/image/4cf9d39a-8171-4306-90d9-f9aecb80294e.jpeg","hidden":false,"posting_restricted_to_mods":false,"instance_id":79126,"visibility":"Public"},"counts":{"comment_id":15090995,"score":2,"upvotes":2,"downvotes":0,"published":"2025-06-27T12:19:59.040016Z","child_count":0},"creator_banned_from_community":false,"banned_from_community":false,"creator_is_moderator":false,"creator_is_admin":false,"subscribed":"NotSubscribed","saved":false,"creator_blocked":false}]}