Why does Term::map_from_pairs return a NifResult?

rusterlium / rustler

Safe Rust bridge for creating Erlang NIF functions

https://docs.rs/crate/rustler

Apache License 2.0

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Why does Term::map_from_pairs return a NifResult? #552

Closed radrow closed 1 year ago

radrow commented 1 year ago

I don't understand the circumstances in which it fails. Creating a new map is safe, so should be inserting to something we know is a map. Am I missing something?