10 releases

0.3.0 Dec 17, 2021
0.2.2 Mar 8, 2021
0.2.0 Feb 8, 2021
0.1.5 Feb 6, 2021
0.1.1 Jun 10, 2020

#192 in Procedural macros

Download history 2424/week @ 2024-11-30 3167/week @ 2024-12-07 2470/week @ 2024-12-14 703/week @ 2024-12-21 1027/week @ 2024-12-28 1810/week @ 2025-01-04 2723/week @ 2025-01-11 2205/week @ 2025-01-18 2422/week @ 2025-01-25 3986/week @ 2025-02-01 4200/week @ 2025-02-08 6011/week @ 2025-02-15 5604/week @ 2025-02-22 4076/week @ 2025-03-01 3641/week @ 2025-03-08 3199/week @ 2025-03-15

17,350 downloads per month
Used in 13 crates (10 directly)

Custom license

14KB
173 lines

Format-bytes

This crate exposes a procedural macro that allows you to format bytestrings. For more background on why you would want to do that, read this article.

Usage

Add this to your Cargo.toml:

[dependencies]
format-bytes = "0.2"

then use the macro like so:

use format_bytes::format_bytes;

fn main() {
    assert_eq!(
        format_bytes!(b"look at those {} bytes", &[0u8, 1, 2]),
        b"look at those \x00\x01\x02 bytes"
    );
}

See more examples of how it works on the documentation of format_bytes! itself.

Missing features

  • Named arguments, but they should be added in a future version
  • Python-like "f-string" functionality is not planned because of its more complex implementation and limited actual benefit
  • format!-like padding helpers: if the need manifests itself, they might appear
  • #[no_std] support

Why not 1.0?

Not until named arguments have landed and the macro gets a bit of mileage (it will be used in Mercurial).

Dependencies

~1.5MB
~38K SLoC