D and Nim

[bearophile via Digitalmars-d]

Ary Borenszweig:

> Are there proofs of percentage of bugs caused by incorrectly 
> mutating variables that were supposed to be immutable?

I don't know, probably not, but the progress in language design 
is still in its pre-quantitative phase (note: I think Rust 
variables are constant by default, and mutable on request with 
"mut").
It's not just a matter of bugs, it's also a matter of making the 
code simpler to better/faster understand what a function is doing 
and how.


> I don't remember having such bug in my life.

Perhaps you are very good, but a language like D must be designed 
for more common programmers like Kenji Hara, Andrei Alexandrescu, 
or Raymond Hettinger.

Bye,
bearophile