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lambda-fairy/if_chain

Macro for writing nested `if let` expressions
Source code at GitHub https://docs.rs/if_chain
lambda-fairy/if_chain.json
{
  "createdAt": "2016-12-28T22:40:27Z",
  "defaultBranch": "main",
  "description": "Macro for writing nested `if let` expressions",
  "fullName": "lambda-fairy/if_chain",
  "homepage": "https://docs.rs/if_chain",
  "language": "Rust",
  "name": "if_chain",
  "pushedAt": "2025-08-29T15:17:09Z",
  "stargazersCount": 169,
  "topics": [
    "macro",
    "rust"
  ],
  "updatedAt": "2025-11-18T12:22:55Z",
  "url": "https://github.com/lambda-fairy/if_chain"
}

if_chain

Section titled “if_chain”

CI Cargo

If you’re using Rust 1.88 or newer, check out if let chains instead. This crate is still available for earlier versions of Rust.

This crate provides a single macro called if_chain!.

if_chain! lets you write long chains of nested if and if let statements without the associated rightward drift. It also supports multiple patterns (e.g. if let Foo(a) | Bar(a) = b) in places where Rust would normally not allow them.

For more information on this crate, see the documentation and associated blog post.