The get_default example requires only one to use the stdlib API: https://doc.rust-lang.org/std/collections/hash_map/enum.Entry.html#method.or_default https://do

The get_default example requires only one to use the stdlib API: https://doc.rust-lang.org/std/collections/hash_map/enum.Entry.html#method.or_default https://doc.rust-lang.org/std/collections/hash_map/enum.Entr...