Scala 2 compiler and standard library. For bugs, see scala/bug
I believe that's the older bit-mapped trie structure, which was replaced with Radix Balanced Finger Trees. Here's the PR where they did it.
NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.
List vs Vector in 2022
1 project | reddit.com/r/scala | 16 Mar 2022
What's the story behind Scala's logo?
1 project | reddit.com/r/scala | 8 Feb 2022
Google has contributed a immensely to the software world with product and services like android which is open source, firebase, google colab, many programming languages and frameworks like flutter, what has apple really done?
2 projects | reddit.com/r/learnprogramming | 7 Nov 2021
Scala 2.13.7: Android compatibility improvements, support for new JDKs, alignment with latest Scala 3.x and many other things
1 project | reddit.com/r/scala | 1 Nov 2021
Using BiDirectional Protocol support in Selenium 4 to stream console logs and network requests
2 projects | dev.to | 1 Nov 2021