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			17 lines
		
	
	
		
			315 B
		
	
	
	
		
			Rust
		
	
	
	
	
	
			
		
		
	
	
			17 lines
		
	
	
		
			315 B
		
	
	
	
		
			Rust
		
	
	
	
	
	
| //@ aux-build:block-on.rs
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| //@ edition:2021
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| //@ run-pass
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| 
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| #![feature(async_closure)]
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| 
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| extern crate block_on;
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| 
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| fn main() {
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|     block_on::block_on(async {
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|         let x = async |x: &str| -> String { x.to_owned() };
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|         let mut s = x("hello, world").await;
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|         s.truncate(4);
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|         println!("{s}");
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|     });
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| }
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