Systems Programming with Rust by Ken Youens-Clark

Author:Ken Youens-Clark [Ken Youens-Clark]
Language: eng
Format: epub, pdf
Publisher: O'Reilly Media, Inc.
Published: 2022-02-24T16:00:00+00:00

pub fn run(config: Config) -> MyResult<()> { for filename in &config.files { match open(filename) { Err(err) => eprintln!("{}: {}", filename, err), Ok(_file) => println!("Opened {}", filename), } } Ok(()) }

Using your open filehandle, start as simply as possible using the empty file and make sure your program prints zeros for the three columns of lines, words, and bytes:

$ cargo run -- tests/inputs/empty.txt 0 0 0 tests/inputs/empty.txt

Next use tests/inputs/fox.txt and make sure you get the following counts. I specifically added various kinds and numbers of whitespace to challenge you on how to split the text into words:

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