/bin-compat-example

Primary LanguageScala

bin incompatibility example with traits

This small samples demonstrates the impact of adding a method on a public trait.

  • logger has a Logger trait
  • logger-wrapper uses the Logger trait
  • app uses both

Switch to first (initial) commit in repo:

  • cd logger && sbt publishLocal && cd ../
  • cd logger-wrapper && sbt publishLocal && cd ../
  • cd app && sbt run // works

Switch to second commit in repo:

  • cd logger && sbt publishLocal && cd ../
  • cd app && sbt run // broken

Switch to HEAD in repo:

  • cd logger && sbt publishLocal && cd ../
  • cd app && sbt run // fixed