Created
May 2, 2018 18:15
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array_and_hash_3
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| # Declaring arrays and hashes that can have nils and have either strings or ints | |
| array = [] of Int32|String? | |
| hash = {} of String => Int32|String? | |
| alias A = Int32|String? | |
| array_2 = [] of A |
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