View Source KeyError exception (Elixir v1.16.0)

An exception raised when a key is not found in a data structure.

For example, this is raised by Map.fetch!/2 when the given key cannot be found in the given map.

The following fields of this exception are public and can be accessed freely:

  • :term (term/0) - the data structure that was searched
  • :key (term/0) - the key that was not found