Questions And Answers

More Tutorials

How to create a file in Rust?

An instance of a File can be read and/or written depending on what options it was opened with. Files also implement Seek to alter the logical cursor that the file contains internally.

Example of how to create a file in Rust

Below example will create a file (filename: helloWorld.txt) using method create() and the content (will be Hello, world!) using method write_all(), write all method take parameter as bytes so we need to add b before the content or convert it to bytes as variable and use it.

use std::fs::File;
use std::io::prelude::*;

fn main() -> std::io::Result<()> {
    let mut file = File::create("helloWorld.txt")?;
    file.write_all(b"Hello, world!")?;


In this page (written and validated by ) you learned about How to create a file in Rust? . What's Next? If you are interested in completing Rust tutorial, we encourage you simply to start here: Rust Tutorial.

Incorrect info or code snippet? We take very seriously the accuracy of the information provided on our website. We also make sure to test all snippets and examples provided for each section. If you find any incorrect information, please send us an email about the issue:

Share On:

Mockstacks was launched to help beginners learn programming languages; the site is optimized with no Ads as, Ads might slow down the performance. We also don't track any personal information; we also don't collect any kind of data unless the user provided us a corrected information. Almost all examples have been tested. Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content. By using, you agree to have read and accepted our terms of use, cookies and privacy policy.