mixed_array_in_hash_key.cr

alias IntOrNil = Array(Int32 | Nil)

mixed = [4, 5, nil]
ints = [6, 7]

array_storage = [] of IntOrNil
array_storage << mixed
array_storage << ints

hash_storage = {} of IntOrNil => Int32
hash_storage[mixed] = 1
hash_storage[ints] = 2 # This gives:
# in src/hash.cr:45: instantiating 'insert_in_bucket(Int32, Array(Int32), Int32)'
#
#     entry = insert_in_bucket index, key, value
#             ^~~~~~~~~~~~~~~~
#
# in src/hash.cr:854: instantiating 'Hash::Entry(Array(Int32 | Nil), Int32):Class#new(Array(Int32), Int32)'
#
#           return entry.next = Entry(K, V).new(key, value)
#                                           ^~~
#
# in src/hash.cr:898: instance variable '@key' of Hash::Entry(Array(Int32 | Nil), Int32) must be Array(Int32 | Nil), not Array(Int32)
#
#     def initialize(@key : K, @value : V)