Correct and clarify integer division rounding docs#26981
Conversation
|
Thanks for the pull request, and welcome! The Rust team is excited to review your changes, and you should hear from @alexcrichton (or someone else) soon. If any changes to this PR are deemed necessary, please add them as extra commits. This ensures that the reviewer can see what has changed since they last reviewed the code. The way Github handles out-of-date commits, this should also make it reasonably obvious what issues have or haven't been addressed. Large or tricky changes may require several passes of review and changes. Please see the contribution instructions for more information. |
|
You can actually document trait implementations. example The mock-impl of Div and Rem for all the primitives is here: https://doc.rust-lang.org/nightly/src/core/ops.rs.html#354-368 In principle you could split out the macro into two; one for integers and one for floats and it will show up on e.g. this page: https://doc.rust-lang.org/std/primitive.u8.html but forward_ref_binop might get in the way of doing this satisfactorily. |
|
r? @gankro |
|
Another downside of the impl solution is that the details will be incredibly buried. That impl page is pretty crazy. @wthrowe thoughts? |
|
I've tried moving the docs to the specific impls. I agree that both solutions have downsides, but I think I like the new version better. I expect most people who want this will be searching for it, so as long as it is on a reasonable page it's probably OK. The forward_ref_binop stuff does mean that only the main impl gets documented, but I think that's alright. People can probably guess that they all do the same thing. I wonder if making the documentation generator put things with actual documentation at the top would be a good idea. It would make stuff like this stand out more, but it would also separate related entries in the list if some have documentation and others don't (like the actual and ref implementations in my latest commit). I also have no idea how annoying it would be to code. |
|
@bors r+ It probably wouldn't be too hard to teach rustdoc to frob the impl ordering based on whether the documentation is empty or not. |
|
📌 Commit 7824956 has been approved by |
This resolves #26845. I'm not entirely satisfied with the placement of the rounding discussion in the docs for the `Div` and `Rem` traits, but I couldn't come up with anywhere better to put it. Suggestions are welcome. I didn't add any discussion of rounding to the `checked_div` (or rem) or `wrapping_div` documentation because those seem to make it pretty clear that they do the same thing as `Div`.
5 participants
This resolves #26845.
I'm not entirely satisfied with the placement of the rounding discussion in the docs for the
DivandRemtraits, but I couldn't come up with anywhere better to put it. Suggestions are welcome.I didn't add any discussion of rounding to the
checked_div(or rem) orwrapping_divdocumentation because those seem to make it pretty clear that they do the same thing asDiv.