RS.CLIPPY.MANUAL_OK_OR

Finds patterns that can be encoded more concisely with `Option::ok_or`

This checker is a Clippy lint created by The Rust Project Contributors. The documentation shown here is a copy of the original documentation for: manual_ok_or. Copyright ©2025 The Rust Team. All rights reserved.

What it does

Finds patterns that reimplement Option::ok_or.

Why is this bad?

Concise code helps focusing on behavior instead of boilerplate.

Examples

let foo: Option<i32> = None;
foo.map_or(Err("error"), |v| Ok(v));

Use instead:

let foo: Option<i32> = None;
foo.ok_or("error");