[Haskell] Re: Probably a trivial thing for people knowing Haskell

[Friedrich]

the posted codes runs in constant memory, so  yes that make it
possible that the stuff runs. That's really nice. Howerver the time is
drastically bad

Even the ruby solution need just 
check_downloads/check_downloads.rb .  1,25s user 0,06s system 99% cpu
1,322 total

Here's the ruby code
#!/usr/bin/ruby

sum = 0;
count = 0;
if (ARGV[0]) then
    Dir.chdir(ARGV[0])
else
    Dir.chdir("Mail/Administration")
end
Dir["[0-9]*"].each { |file |
  fh = File.open(file)
    while line = fh.gets
      if line =~ /(\d+) Windows executable/
        num = $1.to_i
        #log.printf("file_name = %s, num = %d\n", file, num);
        sum += num
        count += 1
      end
    end
  fh.close

}

printf("%d downloads in %d days = %.2f downlaods/day", sum, count, Float(sum)/count)
       
    
but the haskell  solution:
./chk_dwlds  17,71s user 0,11s system 99% cpu 17,836 total

Ruby is surely not the speed king of scripting languages, but what
Haskell delivers is "way worse"....

Howerver at least it doesn not crash any longer....

Regards
Friedrich