Term Type

[filmor]

Raise default version to 2.15 and implement get_type using enif_term_type

#509

[filmor]

The main disadvantage of this approach is that this actually breaks the API since enif_term_type distinguishes float and integer, but doesn't distinguish list and empty_list anymore.

[evnu]

I think this is fine! I only wonder if we should rid ourselves of NIF versions below 2.15, as that falls outside the OTP versions we support I think.

[evnu]

Seems that I forgot to save this comment:

Do we actually need to support nif versions below 2.15? Our README states that we support the three most-recent OTP releases, so I think that we can expect users to have at least NIF version 2.15. Note that we have an inconsistency in the README however:

The minimal supported NIF version for a library should be defined via Cargo features. The default is currently 2.14 (Erlang/OTP 21). To use features from NIF version 2.16 (Erlang/OTP 24), the respective feature flag has to be enabled on the dependency:

[filmor]

Good point, I'll adjust the README for this branch.

Let's release this (after the other pending PRs are processed) and drop 2.14 support after that.