From: "Peña, Botp" <botp@...>
Date: 2006-02-23T19:19:24+09:00
Subject: Re: setting nil to zero

Robert Klemme [mailto:bob.news@gmx.net] :

#f[w] = (f[w] || 0) + 1

clear rubyish solution, Robert.
thanks again for generous help.

i am still hoping for the plain f[w] += 1 though :)

for the record, i played w the ff

ruby>cat test.rb

class NilClass
   def method_missing(methId, *args)
      str = methId.id2name
      if str == "+" and args[1].nil?
         #str is "+"
         #args[1]  is nil
         #args[0]  is rhs value
         return args[0]
      end
   end
end

f = {}
f["test"] += 1
f["test2"] += 2
p f

f = []
f[1] += 1
f[5] += 2
p f


ruby>ruby test.rb
{"test2"=>2, "test"=>1}
[nil, 1, nil, nil, nil, 2]

ruby>

I doubted if it's robust enough, so my q...

-botp


#Kind regards
#
#    robert
#
#
#