What features would you want in a new programming language?

1. letlang

   1 12 167 7.9 Rust

   Functional language with a powerful type system.

   

   I'm working on a programming language inspired by erlang and which compiles to Rust: https://letlang.dev

2. CodeRabbit

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3. Pipefish

   2 36 165 9.8 Go

   Source code for the Pipefish programming language

   

   I meant the lang I'm writing. (This being r/ProgrammingLanguages, when people say "my lang" that's what they're going to mean. We're cooking the future here, my friend.)

4. Deal

   3 9 775 7.0 Python

   🤝 Design by contract for Python. Write bug-free code. Add a few decorators, get static analysis and tests for free.

   

   I started using a design by contract library for a Python project this year and it made my code safer and easier to use.

5. koka

   4 33 3,450 9.5 Haskell

   Koka language compiler and interpreter

   

   It also offers a great Inversion of Control mechanism where everything is customisable, and, unlike Capability Objects, AESs also offer compatibility with type inference (you can pass functions doing IO to map, and it Just Works(TM)) and first-class control over stack frames (because really a continuation function is just some stack frames, which you can manually move to the heap if you want a closure; which means async is an effect!). It also is composable in ways Monads are not.

6. mech

   5 7 214 9.8 Rust

   🦾 Mech is a programming language for building data-driven systems like robots, games, and interfaces. Start here!

   

   You should take a look at the language I’m developing, Mech: https://github.com/mech-lang/mech

7. SaaSHub

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