ouroboros-network VS Elm

I'm one of the consensus team members at IOG. We maintain and extend the consensus layer of the Cardano blockchain, which provides a rich set of challenges related to distributed computing, type level programming, networking, concurrency, among others.

According to a document on pipelining I saw on Github they might be building a whole new Ouroboros protocol called Leios (https://github.com/input-output-hk/ouroboros-network/pull/3579/files) so there might be something we don't know yet

• cardano-node - top level integration code • ouroboros-network & ouroboros-consensus - network code & consensus (which integrates network, consensus and the ledger) • ledger - ledger(s) specifications and implementation • plutus - the smart contract language and related infrastructure

Check out cardano-ping.

This is non trivial, you can check an example how we generate valid subset of Haskell to check that our implementation of orElse is corect: https://github.com/input-output-hk/ouroboros-network/blob/master/io-sim/test/Test/STM.hs

So from what I gather the transaction fee is a fixed protocol parameter. I like how fees are distributed amongst the epoch, If I had to design a blockchain system I'd also have chosen this approach TBH. It addresses some of the issues and misaligned incentives if you only have to rely on fees for block rewards. However if the demand for transactions constantly outweighs the available space you get into other issues. I tried to find details on how Cardano handles transactions and manages its mempool. I believe somewhere here is the code? (https://github.com/input-output-hk/ouroboros-network/blob/master/ouroboros-consensus/src/Ouroboros/Consensus/Mempool/Impl.hs)

Ouroboros(the consensus algorithm's formal specification): https://github.com/input-output-hk/ouroboros-network

Elm [1] is based on a similar idea. Build your app from pure functions that return HTML tags.

[1] https://elm-lang.org/

You also wouldn't really be creating your own new programing language. You would be creating something that can run JavaScript by following JavaScript standards and syntax. You might be able to add some non-standard features of your own on top of those standards, or include your own standard library of helpers or utilities, but you can't completely make a new or alternative language and then load it in the browser (or at least not by reimplementing ECMAScript standards... you actually can make your own language that runs within any Javascript enviroment, if you provide an interpreter or compiler that transforms it into valid JS. Some people have done something like this, eg Elm: https://elm-lang.org/).

You should at least have a look at https://elm-lang.org/ it is a pure functional language like Haskell (although with fewer fancy syntax/type classes) but it has some lovely libraries for visualisation and even with plain elm (+ elm-ui) doing string transformations can be easily done.

I get it. However, the whole point of using Unions to narrow your types, ensure only a set of possible scenarios can occur, and only access data of a particular union when it’s safe to do so. That’s some of what pattern matching can provide, and 100% of what using switch statements in TypeScript with their Discriminated Unions can provide. Yes, it’s not 100% exhaustive, but TypeScript is not soundly typed, and even Elm which is still has the same issue TypeScript does: You’re running in JavaScript where anything is possible. So it’s good enough to build with and much better than what you had.

The beauty of a language like Elm (and other lambda-calculus / functional programming inspired languages) is that there's very little transformation involved in going from an idea to code. And that seems to have a big impact on getting things done.

I think the most fun and approachable way for beginners to build games with functional programming is with Elm [1].

See a few (small, demo) games built by the community in [2] .

Notice Elm has abandoned the FRP approach in favor of Model-View-Update [3].

[1] https://elm-lang.org/