Editing Ternary conditional operator (section)

===Rust===
Being an [[expression-oriented programming language]], Rust's existing <code>if ''expr<sub>1</sub>'' else ''expr<sub>2</sub>''</code> syntax can behave as the traditional {{code|?:}} ternary operator does. Earlier versions of the language did have the {{code|?:}} operator but it was removed<ref>{{Cite web|url=https://github.com/rust-lang/rust/pull/1705|title = Remove Ternary Operator by pwoolcoc · Pull Request #1705 · rust-lang/Rust|website = [[GitHub]]}}</ref> due to duplication with {{code|if}}.<ref>{{Cite web|url=https://github.com/rust-lang/rust/issues/1698|title=Remove ternary operator · Issue #1698 · rust-lang/Rust|website=[[GitHub]]}}</ref>

Note the lack of semi-colons in the code below compared to a more declarative {{code|if}}...{{code|else}} block, and the semi-colon at the end of the assignment to {{code|y}}.

<syntaxhighlight lang="rust">
let x = 5;

let y = if x == 5 {
    10
} else {
    15
};
</syntaxhighlight>

This could also be written as:

<syntaxhighlight lang="rust">
let y = if x == 5 { 10 } else { 15 };
</syntaxhighlight>

Note that curly braces are mandatory in Rust conditional expressions.

You could also use a {{code|match}} expression:

<syntaxhighlight lang="rust">
let y = match x {
    5 => 10,
    _ => 15,
};
</syntaxhighlight>