COMTRADE file converter (basic version) written in F# (.NET Core 2.0) according to standard described in: "C37.111-1999 - IEEE Standard Common Format for Transient Data Exchange (COMTRADE) for Power Systems". You can buy and read the standard here: https://standards.ieee.org/findstds/standard/C37.111-1999.html
Initially F# has been choosen mostly for learning purposes. It turned out that this language is really useful (elegant, succinct, with many powerfull features) for cases where quite complex but well structured (well defined) file must be converted (mapped) into an object.