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#currency #convert #units

unitx-core

Fast unit conversion primitives with live currency rates

1 unstable release

0.1.0 Oct 27, 2025

#629 in Science


Used in unitx-api

MIT license

20KB
382 lines

unitx-core

Core library for the unitx project. Provides temperature, distance, and live currency conversions with validation utilities.

Usage

cargo add unitx-core
use rust_decimal::Decimal;
use unitx_core::currency::{convert, CurrencyUnit};

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let amount = Decimal::new(10000, 2); // 100.00
    let eur = convert(amount, CurrencyUnit::USD, CurrencyUnit::EUR)?;
    println!("USD {} -> EUR {}", amount, eur);
    Ok(())
}

Currency rates are sourced from the European Central Bank daily feed (no API keys required).

Live FX roundtrip tests are marked #[ignore]; run cargo test -- --ignored with network access to exercise them.

Dependencies

~20–35MB
~490K SLoC