TIL about the differences between Elixir's boolean operators

TIL the difference between Elixir’s “relaxed”/symbolic Boolean operators (||, &&) and their “strict”/word correspondents (and, or).

1. Relaxed versions do type coercion; strict require exactly true or false
2. Strict versions are allowed in guards

Relevant docs:

• Or:
  • or/2
  • ||/2
• And:
  • and/2
  • &&/2