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@@ -2363,7 +2363,7 @@ Returning a `T*` to transfer ownership is a misuse.
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Node* find(Node* t, const string& s) // find s in a binary tree of Nodes
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{
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if (t->name==s) return t;
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if (t == nullptr || t->name == s) return t;
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if (auto p = find(t->left,s)) return p;
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if (auto p = find(t->right,s)) return p;
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return nullptr;
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