RS.CLIPPY.COLLAPSIBLE_STR_REPLACE

Collapse consecutive calls to str::replace (2 or more) into a single call

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

What it does

Checks for consecutive calls to str::replace (2 or more) that can be collapsed into a single call.

Why is this bad?

Consecutive str::replace calls scan the string multiple times with repetitive code.

Example

let hello = "hesuo worpd"
    .replace(\'s\', "l")
    .replace("u", "l")
    .replace(\'p\', "l");

Use instead:

let hello = "hesuo worpd".replace([\'s\', \'u\', \'p\'], "l");

Configuration

msrv: The minimum rust version that the project supports. Defaults to the rust-version field in Cargo.toml

(default: current version)