I would like Crystal to include some modern features instead just being a fast and nice language. How about stuff like: immutability, good functional programming support, complex union types, compile-time guarantees?
Check out Crystal’s official website sometime to learn more about its modern features. Crystal doesn’t have immutability, but does have support for functional programming and union types. “Compile-time guarantees” is such a vaguely specified feature that virtually all programming languages have that, but its type system is actually pretty strong despite how it looks with all the type inference, and even prevents null pointer exceptions unlike a lot of static languages.
It also has a lightweight threading system that makes it work well as a web server. Not quite as elegant as something like Elixir, with its isolated processes, but still nice. It also supports macros, which can make the code a lot more elegant and performant compared to similar languages.
It also has a lightweight threading system that makes it work well as a web server. Not quite as elegant as something like Elixir, with its isolated processes, but still nice. It also supports macros, which can make the code a lot more elegant and performant compared to similar languages.