What does PLT stand for?

Question

I've been using Dialyzer (and Dialyxir) on a big Elixir code base, and when I run it, it spits out a bunch of diagnostic information. It references .plt files a lot. What does "PLT" stand for in the context of Erlang and Dialyzer?

Answer 1

In Dialyzer's context, PLT stands for Persistent Lookup Table (link to docs). It is the data structure that contains inferred and user-annotated (i.e. 'spec-ed') type signatures that Dialyzer is expected to treat as known and correct when analyzing new files.