From: Joel VanderWerf <vjoel@...>
Date: 2009-07-21T03:20:51+09:00
Subject: getting char from string as fixnum in 1.8 and 1.9


What's the best way to write this program so that it will run correctly 
on both 1.8 and 1.9? This works, but I'm just curious if there's 
anything better, preferably without the RUBY_VERSION test, without 
adding methods to String, and without losing much efficiency compared 
with 1.8's String#[].

if RUBY_VERSION =~ /\A1\.9/
   def third_char_as_fixnum(s)
     s[2].ord
   end
else
   def third_char_as_fixnum(s)
     s[2]
   end
end

s = "abc"
p third_char_as_fixnum(s) # ==> 99

-- 
       vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407