[Merged by Bors] - chore: rename List.indexOf_lt_length to List.indexOf_lt_length_iff

[jcommelin]

---

[github-actions]

PR summary 9004ae4b70

Import changes for modified files

No significant changes to the import graph

Import changes for all files

Files	Import difference

---

Declarations diff

+ indexOf_lt_length_iff

You can run this locally as follows

## summary with just the declaration names:
./scripts/declarations_diff.sh <optional_commit>

## more verbose report:
./scripts/declarations_diff.sh long <optional_commit>

The doc-module for script/declarations_diff.sh contains some details about this script.

---

No changes to technical debt.

You can run this locally as

./scripts/technical-debt-metrics.sh pr_summary

• The relative value is the weighted sum of the differences with weight given by the inverse of the current value of the statistic.
• The absolute value is the relative value divided by the total sum of the inverses of the current values (i.e. the weighted average of the differences).

[TwoFX]

I think this is a good change, but I wonder whether you were meaning to include it in this PR.

[adomani]

I added the script and, if I had remembered, I would have used what Johan placed here: happy to include it in this PR!

[adomani]

Thanks!

bors d+

[mathlib-bors]

✌️ jcommelin can now approve this pull request. To approve and merge a pull request, simply reply with bors r+. More detailed instructions are available here.

[jcommelin]

bors r+

[mathlib-bors]

Pull request successfully merged into master.

Build succeeded:

• Build
• Lint style