{
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  "published":"2024-11-04T00:41:30.152Z",
  "attributedTo":"https://epiktistes.com/actors/toddsundsted",
  "inReplyTo":"https://hachyderm.io/users/briankung/statuses/113419652500472605",
  "replies":"https://epiktistes.com/objects/FnBv0YbpE8A/replies",
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  "cc":["https://epiktistes.com/actors/toddsundsted/followers"],
  "content":"<p><a href=\"https://hachyderm.io/users/briankung\" class=\"mention\" rel=\"tag\">@briankung</a> it's not as ergonomic as ruby, but in crystal you can declare recursive type aliases, which help with that specific problem:</p><pre>alias RecursiveHash::Types = Hash(Char, RecursiveHash::Types) | String\n\nh = Hash(Char, RecursiveHash::Types).new\nh['a'] = Hash(Char, RecursiveHash::Types).new\nh['b'] = \"B\"\n\na = h['a'].as(Hash(Char, RecursiveHash::Types))\na['a'] = Hash(Char, RecursiveHash::Types).new\na['b'] = \"BB\"</pre><p>the cost is some syntax to cast the union type to the specific recursive type, but you avoid static nested types.</p>",
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      {"type":"Mention","name":"@briankung@hachyderm.io","href":"https://hachyderm.io/users/briankung"}
  ],
  "type":"Note",
  "id":"https://epiktistes.com/objects/FnBv0YbpE8A"
}