[stdlib] Refactor normalize_index
to cap to container length and other details
#3783
+135
−55
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Outdated suggestions cannot be applied.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.
Refactor
normalize_index
to cap to container length and other details.Closes #3644
Part of #2948
Changed the assert_mode to be "none" by default (I would like it to be "warn" but it doesn't seem to work at comp time) and made it a parameter for customization. Crashing on index out of bounds access is "safe" in the sense that it does not allow the access, but highly unsafe for code where you don't expect your program to crash. I have previously expressed this opinion on the PR where this function was created. Now that I've used it again I ended up just hand rolling my own implementation, which is pointless for the supposed purpose of this function: "standard and safe way to normalize indices"