[Docs] Fix fold explanation in the guide #18139
Merged
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
The explanation of fold talks about three elements that should be summed, but it uses different values in the provided code.
Contributor
|
Thanks for the pull request, and welcome! The Rust team is excited to review your changes, and you should hear from @brson (or someone else) soon. |
Contributor
|
this is a nice catch, thank you! |
bors
added a commit
that referenced
this pull request
Oct 19, 2014
The explanation of fold talks about three elements that should be summed, but it uses different values in the provided code.
lnicola
pushed a commit
to lnicola/rust
that referenced
this pull request
Sep 25, 2024
fix: Extend `type_variable_table` when modifying index is larger than the table size Fixes rust-lang#18109 Whenever we create an inference variable in r-a, we extend `type_variable_table` to matching size here; https://github.com/rust-lang/rust-analyzer/blob/f4aca78c92e03354327c8f6c7fefaef9f45ab166/crates/hir-ty/src/infer/unify.rs#L378-L381 But sometimes, an inference variable is [created from chalk](https://github.com/rust-lang/chalk/blob/ab710e0c9b455403b138ef72a2fb90967a58eff3/chalk-solve/src/infer/unify.rs#L743) and passed to r-a as a type of an expression or a pattern. If r-a set diverging flag to this before the table is extended to a sufficient size, it panics here; https://github.com/rust-lang/rust-analyzer/blob/f4aca78c92e03354327c8f6c7fefaef9f45ab166/crates/hir-ty/src/infer/unify.rs#L275-L277 I think that extending table when setting diverging flag is reasonable becase we are already doing such extending to a size that covers the inference vars created from chalk and this change only covers the order-dependent random cases that this might fail
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
5 participants
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
The explanation of fold talks about three elements that should be summed, but it uses different values in the provided code.