mirror of https://github.com/rust-lang/rust.git
27 lines
553 B
Rust
27 lines
553 B
Rust
#![allow(dead_code)]
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#![warn(clippy::unused_io_amount)]
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use std::io;
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fn try_macro<T: io::Read + io::Write>(s: &mut T) -> io::Result<()> {
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try!(s.write(b"test"));
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let mut buf = [0u8; 4];
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try!(s.read(&mut buf));
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Ok(())
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}
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fn question_mark<T: io::Read + io::Write>(s: &mut T) -> io::Result<()> {
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s.write(b"test")?;
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let mut buf = [0u8; 4];
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s.read(&mut buf)?;
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Ok(())
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}
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fn unwrap<T: io::Read + io::Write>(s: &mut T) {
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s.write(b"test").unwrap();
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let mut buf = [0u8; 4];
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s.read(&mut buf).unwrap();
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}
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fn main() {}
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