mirror of
https://github.com/KaiserY/trpl-zh-cn
synced 2025-05-04 04:28:04 +08:00
17 lines
358 B
Rust
17 lines
358 B
Rust
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// ANCHOR: here
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use std::fs::File;
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use std::io;
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use std::io::Read;
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fn read_username_from_file() -> Result<String, io::Error> {
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let mut f = File::open("hello.txt")?;
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let mut s = String::new();
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f.read_to_string(&mut s)?;
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Ok(s)
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}
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// ANCHOR_END: here
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fn main() {
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let username = read_username_from_file().expect("Unable to get username");
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}
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