This crate adds a tool to format a number in a base in range [2, 36], since this feature was removed from the standard library.

Add the crate, import radix in scope, and you are ready to go:

extern crate radix_fmt;
use radix_fmt::radix;

Note that you also have one specific function for each radix that does not already exists in the standard library, e.g. radix_3 to format a number in base 3.

Examples:

use radix_fmt::radix;
use std::fmt::Write;

let n = 35;

// Ouput: "z"
println!("{}", radix(n, 36));
// Same ouput: "z"
println!("{}", radix_36(n));

You can use the alternate modifier to capitalize the letter-digits:

use radix_fmt::radix;
use std::fmt::Write;

let n = 35;

// Ouput: "Z"
println!("{:#}", radix(n, 36));

FAQ:

• Which digits are used when the base is superior to 10?

  This crate uses the letters in alphabetic order. That is why the maximum base is 36: it uses all the digits and all the letters of the alphabet.

• Among the functions that format in a specific base, why are some missing? For example there are radix_7 and radix_9, but not radix_8.

  All the numbers in range [2, 36] are represented except 2, 8, 10 and 16 because they already exist in the standard library through binary, octal, decimal (regular) and hexadecimal formatting.

• What if I want to use the capitalized letters as digits?

  Use the alternate modifier {:#}.