struct TrieNode {

  TrieNode*[256] childs;

  void insert() {

    if (childs[0] is null) {}

  }

}

TrieNode* build_trie() {

  TrieNode* t = new TrieNode();

  //t.childs[] = null;

  t.insert();

  return t;

}

pragma(msg, build_trie());