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Re: Re: (OT -- ruby) Re: Re: Favorite programming language, other than Perl:

by educated_foo (Vicar)
on May 11, 2002 at 03:09 UTC ( [id://165837]=note: print w/replies, xml ) Need Help??


in reply to Re: (OT -- ruby) Re: Re: Favorite programming language, other than Perl:
in thread Favorite programming language, other than Perl:

Re passing blocks: thanks. Got that part working.

But about the other, I probably need to clarify a bit. The example in the doc was the following: 

def a
  print "Function 'a' called\n"
  99
end for i in 1..2
  if i == 2
    print "a=", a, "\n"
  else
    a = 1
    print "a=", a, "\n"
  end
end

[download]
Which prints: 
a=1
Function 'a' called
a=99

[download]
Frankly, I think that's perverse, and object-orientation won't save you. What if, instead of printing, you'd tried to call "a.blah"? Presumably you'd get the same sort of bizarre results.

/s

Replies are listed 'Best First'.
Re: Re: Re: (OT -- ruby) Re: Re: Favorite programming language, other than Perl:
by elusion (Curate) on May 11, 2002 at 13:44 UTC
    Sorry, you missed my point. Maybe some code will help. :-) 
    class Foo
     def a
          puts "Function 'a' called"
     end
end

foo = Foo.new
(1..2).each do |i|
     if i == 2
          print "a=", foo.a, "\n"
     else
          a = 1
          print "a=", foo.a, "\n"
     end
end

    [download]
    which prints: 
    Function 'a' called
a=99
Function 'a' called
a=99

    [download]
    You see, functions are meant to belong to a class -- to be methods. Not that you can't declare functions that belong to the main class, but that's not what the design was for. So I guess if you're writing your code in a non-OO way, you could get stuck. But presumably your variable and function names will be better than 'a' :-).

    elusion : http://matt.diephouse.com

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