Editing Entry point (section)

===Rust===
In Rust, the entry point of a program is a function named <code>main</code>. Typically, this function is situated in a file called <code>main.rs</code> or <code>lib.rs</code>.

<syntaxhighlight lang="rust">
// In `main.rs`
fn main() {
    println!("Hello, World!");
}
</syntaxhighlight>

Additionally, as of Rust 1.26.0, the main function may return a <code>Result</code>:<ref>{{cite web |title=Releases.md |url=https://github.com/rust-lang/rust/blob/master/RELEASES.md#version-1260-2018-05-10 |publisher=GitHub Rust |access-date=15 February 2019 |archive-date=2015-05-15 |archive-url=https://web.archive.org/web/20150515221302/https://github.com/rust-lang/rust/blob/master/RELEASES.md#version-1260-2018-05-10 |url-status=live }}</ref>

<syntaxhighlight lang="rust">
fn main() -> Result<(), std::io::Error> {
    println!("Hello, World!");

    Ok(())  // Return a type `Result` of value `Ok` with the content `()`, i.e. an empty tuple.
}
</syntaxhighlight>