num2words

Convert numbers like 42 to forty-two

Usage

This crate can be either used as a library or a binary.

Library

Example usage:

use num2words::Num2Words;
assert_eq!(Num2Words::new(42).to_words(), Ok(String::from("forty-two")));

The builder Num2Words can take any of these methods: lang, cardinal, ordinal, ordinal_num, year, and currency.

use num2words::*;
assert_eq!(
    Num2Words::new(42).lang(Lang::English).to_words(),
    Ok(String::from("forty-two"))
);
assert_eq!(
    Num2Words::new(42).ordinal().to_words(),
    Ok(String::from("forty-second"))
);
assert_eq!(
    Num2Words::new(42.01).currency(Currency::DOLLAR).to_words(),
    Ok(String::from("forty-two dollars and one cent"))
);

These arguments can be chained.

For more information about the available languages, outputs types and currencies, see Information.

Binary

This crate provides a command-line interface to run requests on num2words.

Example:

$ num2words 42
forty-two
$ num2words 10 --to EUR
ten euros

You can download the app via the following command:

$ cargo install num2words

You can also change the language via the CLI argument --lang [ISO 639-1 code] and provide a specific output type or a currency with the argument --to [cardinal|ordinal|ordinal_num|year|ISO 4217].

For more information about the usage of num2words please refer to the docs or via the following command:

$ num2words --help

Information

Supported languages

Here is a list of all of the supported languages:

Flag	Code	ISO 639-1	Language	42
🇺🇸🇬🇧	Lang::English	en	English	forty-two

This list can be expanded! Contributions are welcomed.

Supported output types

Here is a list of all of the supported outputs types (with the associated command-line interface code):

Library method	CLI argument	Example output
.cardinal()	cardinal	forty-two (42)
.ordinal()	ordinal	forty-second (42)
.ordinal_num()	ordinal_num	42nd (42)
.year()	year	nineteen oh-one (1901)
.currency(cur)	ISO 4217 code	forty-two dollars and one cent (42.01)

Supported currencies

Three-letter enum variants corresponds to the currency's ISO 4217 code, but there are exceptions to accomodate generic terminologies: DINAR, DOLLAR, PESO and RIYAL.

A summary of all of the supported currencies are available in the documentation of Currency.

About

This library is widely inspired by Savoir-faire Linux's Python lib.

License

Licensed under either of

• Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.