Analysis of programming languages on Rosetta

[bearophile via Digitalmars-d]

Joakim:

> I wonder why they found Haskell to be so slow, I thought it was 
> compiled.

The first reason for the performance of programs is how much care 
the programmer has to write a fast program, secondly how good the 
chosen algorithms are, and only then at a third place there are 
language implementations.

So the short answer to your question is that most of the Haskell 
programs of Rosettacode are not written for performance. The 
corollary is that performance comparison is silly/bogus.

Often the faster programs of Rosettacode are in... guess a 
language? Yes, in D. Because I have written also performance 
conscious D entries (sometimes I have added various D solutions, 
at various levels of performance, succinctness, safety & 
correctness).

Bye,
bearophile