What it is

A command-line tool in Rust that converts amounts between different currencies using real-time exchange rate data fetched from an API.

Tech overview

• Rust - implementation language
  • serde - serialization and deserialization of structs
  • reqwest - http requests
  • tokio - async runtime
  • clap - easy cli setup
• Docker - dockerfile included for easy building and testing
• AlphaVantage - a real-time currency exchange API with a free plan

Example

Command

docker run exchange -t USD -f PLN -a 7

Result

Exchange from Polish Zloty into United States Dollar:
Exchange rate: 0.25090000,
7PLN = 1.7563USD