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Update rustdoc book to suggest using Termination trait instead of hidden ‘foo’ function #50721

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frewsxcv opened this issue May 13, 2018 · 0 comments
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Update rustdoc book to suggest using Termination trait instead of hidden ‘foo’ function #50721

frewsxcv opened this issue May 13, 2018 · 0 comments
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A-docs Area: Documentation for any part of the project, including the compiler, standard library, and tools E-easy Call for participation: Easy difficulty. Experience needed to fix: Not much. Good first issue. E-mentor Call for participation: This issue has a mentor. Use #t-compiler/help on Zulip for discussion. P-medium Medium priority

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frewsxcv commented May 13, 2018 •
edited by steveklabnik
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Towards the end of this section in the rustdoc book, we suggest wrapping functions that utilize ? with fn foo() -> io::Result<()> { .. }.

Now that the Termination trait has stabilized, we can recommend using that instead of this hidden foo function. For examples of what I mean, see this pull request.

@steveklabnik is happy to mentor anyone who wants to do this. Here's the basic outline of what needs to happen:

Here's the file that needs to be modified: https://github.com/rust-lang/rust/blob/master/src/doc/rustdoc/src/documentation-tests.md

The part that starts with:

Another case where the use of # is handy is when you want to ignore error handling. Lets say you want the following,

This should be moved into its own section, "Using ? in doc tests", and instead of wrapping it in a function, it should suggest something similar to the diff above.

If you have any questions about this, don't hesitate to ask in a comment below!
@frewsxcv frewsxcv added the A-docs Area: Documentation for any part of the project, including the compiler, standard library, and tools label May 13, 2018
@steveklabnik steveklabnik added the P-medium Medium priority label May 14, 2018
@steveklabnik steveklabnik added E-easy Call for participation: Easy difficulty. Experience needed to fix: Not much. Good first issue. E-mentor Call for participation: This issue has a mentor. Use #t-compiler/help on Zulip for discussion. labels May 28, 2018
@teiesti teiesti mentioned this issue May 29, 2018
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Mark-Simulacrum added a commit to Mark-Simulacrum/rust that referenced this issue Jun 5, 2018
@Mark-Simulacrum
Rollup merge of rust-lang#51183 - teiesti:rustdoc-book-termination, r…
1225faf 
…=steveklabnik

Update rustdoc book to suggest using Termination trait instead of hidden ‘foo’ function

Closes rust-lang#50721.

I suggest that someone double-checks my English since I am not a native speaker.

r? @steveklabnik
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A-docs Area: Documentation for any part of the project, including the compiler, standard library, and tools E-easy Call for participation: Easy difficulty. Experience needed to fix: Not much. Good first issue. E-mentor Call for participation: This issue has a mentor. Use #t-compiler/help on Zulip for discussion. P-medium Medium priority
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