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33 lines
669 B
Markdown
33 lines
669 B
Markdown
---
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id: a5820942-f47a-4a5e-ba83-33916cc24674
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title: Drop Trait
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---
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# Introduction
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`Drop` lets you customize what happens when a value is about to go out
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of scope, ie: to release resources like files or network connections.
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# Example
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``` rust
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struct CustomSmartPointer {
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data: String,
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}
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impl Drop for CustomSmartPointer {
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fn drop(&mut self) {
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println!("Dropping CustomSmartPointer with data `{}`!", self.data);
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}
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}
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fn main() {
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let _c = CustomSmartPointer {
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data: String::from("my stuff"),
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};
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let _d = CustomSmartPointer {
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data: String::from("other stuff"),
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};
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println!("CustomSmartPointers created.");
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}
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```
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