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14 lines
349 B
14 lines
349 B
3 years ago
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fn main() {
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let reference_to_nothing = dangle();
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}
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// ANCHOR: here
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fn dangle() -> &String { // dangle returns a reference to a String
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let s = String::from("hello"); // s is a new String
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&s // we return a reference to the String, s
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} // Here, s goes out of scope, and is dropped. Its memory goes away.
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// Danger!
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// ANCHOR_END: here
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