From: ts <decoux@...>
Date: 2000-10-15T21:45:24+09:00
Subject: [ruby-talk:5545] Re: Some newbye question

>>>>> "D" == Dave Thomas <Dave@thomases.com> writes:

D> matz@zetabits.com (Yukihiro Matsumoto) writes:
>> 3 possible solution in my mind for the future:
>> 
>> (1) local variables in the block parameters be valid only in the
>> surrounding block.  I think Davide proposed this one.  This
>> violates (a), and introduces incompatibility (small?).  This is
>> not perfect since the problem remains for non parameter local
>> variables.

D> If I had a vote, I'd go for this one, as it seems cleanest. 

 OK, but how many script do you break ?

 For example in test.rb 

   tt{|i| break if i == 5}
   test_ok(i == 5)

 Why not something like 'let', with this pseudo-syntax (this is just an
 example not a proposition)

   dvar(a, b) # a and b are forced to be dynamic variable in the block
              # even if it exist a local variable a
     # do what you want
   end

 but unfortunately I can't make this work :-(

   a = 24 # local variable
   dvar(a, b)
     a = b = 12 # dynamic variable
     dvar(b)
        b = 24
     end
     b # here b has the value 24 when I want 12 :-( :-(
   end
   a # local variable


Guy Decoux