In our application, we have many structs that contain lists of floats and, especially in test, we often use pattern matching on these objects. (I know, not optimal, but it works for our purposes.) Since upgrading to Elixir 1.16, we get loads of warning “pattern matching on 0.0 is equivalent to matching only on +0.0 from Erlang/OTP 27+. Instead you must match on +0.0 or -0.0”. However, in our application, we never use -0.0 (which is true for most projects, I’d wager). Having to write +0.0 everywhere seems kinda ridiculous and confusing, since -0.0 is used in so few situations ever.

Instead, 0.0 being equivalent to +0.0 is exactly what we want. Rather than having to use +0.0 everywhere, I think it would make a lot of sense to add an option to explicitly acknowledge this equivalence and thereby disable this warning. Perhaps one could add a compiler flag?