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?
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.