RS.CLIPPY.FROM_STR_RADIX_10

From_str_radix with radix 10

This checker is a Clippy lint created by The Rust Project Contributors. The documentation shown here is a copy of the original documentation for: from_str_radix_10. Copyright ©2025 The Rust Team. All rights reserved.

What it does

Checks for function invocations of the form primitive::from_str_radix(s, 10)

Why is this bad?

This specific common use case can be rewritten as s.parse::<primitive>() (and in most cases, the turbofish can be removed), which reduces code length and complexity.

Known problems

This lint may suggest using (&<expression>).parse() instead of <expression>.parse() directly in some cases, which is correct but adds unnecessary complexity to the code.

Example

let input: &str = get_input();
let num = u16::from_str_radix(input, 10)?;

Use instead:

let input: &str = get_input();
let num: u16 = input.parse()?;