On: Copying data is wasteful, mutating data is dangerous

[chii]

> The only problem is that you need a language with a sufficiently powerful type system

why is that a problem?

[skosch → chii]

Because everyone and their grandma can whip up a quick Python script after a few days of practice, whereas learning Haskell is a much bigger investment?

[pwm → chii]

Problem in the sense that most typed languages don't have a sufficiently powerful/expressive type system.