itoa

Fast integer primitive to string conversion

$cargo add itoa

Official docs outline

Extra Credit builds an outline of itoa's docs the first time your work uses it. Until then, start at the official documentation.

cfg-if A macro to ergonomically define an item depending on a large number of #[cfg] parameters. Structured like an if-else chain, the first matchi
memchr Provides extremely fast (uses SIMD on x86_64, aarch64 and wasm32) routines for 1, 2 or 3 byte search and single substring search.
regex-syntax A regular expression parser.
serde A generic serialization/deserialization framework
unicode-ident Determine whether characters have the XID_Start or XID_Continue properties according to Unicode Standard Annex #31
rand_chacha ChaCha random number generator
serde_derive Macros 1.1 implementation of #[derive(Serialize, Deserialize)]
serde_json A JSON serialization file format
autocfg Automatic cfg for Rust compiler features
heck heck is a case conversion library.
log A lightweight logging facade for Rust
once_cell Single assignment cells and lazy values.