rustHow to write line to file in Rust
Writing to a file in Rust is a relatively straightforward process. To do so, you must first open a file in write-only mode using the File::create
method. Then, you can write data to the file using the write_all
method. Finally, you must close the file using the close
method. The following ## Code example shows how to write a line of text to a file:
use std::fs::File;
use std::io::prelude::*;
fn main() {
let mut file = File::create("my_file.txt").expect("Failed to create file");
let line = "This is a line of text written to a file.";
file.write_all(line.as_bytes()).expect("Failed to write to file");
file.close().expect("Failed to close file");
}
In this example, we first create a file called my_file.txt
using the File::create
method. Then, we write a line of text to the file using the write_all
method. Finally, we close the file using the close
method. After running this code, the file my_file.txt
will contain the line of text that was written to it.
Helpful links
Related
More of Rust
- How to replace a capture group using Rust regex?
- How to calculate the sum of a Rust slice?
- How do I create an array of strings in Rust?
- How to replace all matches using Rust regex?
- How to use regex to match a double quote in Rust?
- Hashshet example in Rust
- How to use regex captures in Rust?
- How to convert JSON to a struct in Rust?
- How to pop an element from a Rust HashMap?
- How to convert a Rust HashMap to a JSON string?
See more codes...