ct-austin/ifmt

---

ct-austin/ifmt.json

{
  "createdAt": "2019-04-20T07:44:46Z",
  "defaultBranch": "master",
  "description": "Inline expression interpolation for Rust.",
  "fullName": "ct-austin/ifmt",
  "homepage": "https://crates.io/crates/ifmt",
  "language": "Rust",
  "name": "ifmt",
  "pushedAt": "2023-09-02T11:54:28Z",
  "stargazersCount": 200,
  "topics": [
    "macro",
    "proc-macro",
    "rust",
    "rust-crate",
    "string-interpolation",
    "strings",
    "sugar",
    "syntax"
  ],
  "updatedAt": "2025-10-31T01:27:11Z",
  "url": "https://github.com/ct-austin/ifmt"
}

ifmt

A small crate which brings inline string interpolation to rust’s standard formatting macros.

Getting started

To use ifmt in your project, add

[dependencies]
ifmt = "0.3.3"

to your Cargo.toml.

Examples

let four = 4;
iprintln!("four plus four is: " four + 4);
// four plus four is: 8
iprintln!("here's a hex number: 0x" 0xb0bi64 * 1321517i64 ;x);
// here's a hex number: 0xdeadbeef
iprintln!("here's a debugging value: " Some(four);?);
// here's a debugging value: Some(4)

Supported macros

format!      -> iformat!
print!       -> iprint!
println!     -> iprintln!
eprint!      -> ieprint!
eprintln!    -> ieprintln!
write!       -> iwrite!
writeln!     -> iwriteln!
panic!       -> ipanic!
format_args! -> iformat_args!

License

This project is licensed under the MIT license or the Apache 2.0 license at your option.