Managing Binary Compatibility in Scala (Scala Days 2011)
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The following is the abstract submitted for my Scala Days 2011 talk: ...
The following is the abstract submitted for my Scala Days 2011 talk:
Binary compatibility is not a topic specific to the Scala language, but rather a concern for all languages targeting the JVM, Java included. Scala shares with Java many sources of potential binary incompatibilities, however, because of Scala greater expressiveness, Scala code has unique sources of incompatibility.
The Scala programming language offers several language constructs that do not have an equivalent in Java and are not natively supported by the JVM. Because of this, the Scala compiler (scalac) transforms these constructs into lower-lever, Java compatible, patterns that can be then easily translated into bytecode. Good examples of such high-level Scala constructs are traits, for mixin-based inheritance, and functions as first data citizens.
During this presentation we will review the main sources of binary incompatibility for the Scala language, providing you with useful insights about how you should evolve your codebase to avoid binary incompatibilities. Furthermore, we will show a tool, the Migration Manager, that can be used to automatically diagnose binary incompatibilities between two versions of a same library.
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