From: Randy Kramer <rhkramer@...>
Date: 2005-08-19T11:54:14+09:00
Subject: Re: Newbie question

On Wednesday 17 August 2005 04:22 pm, James Edward Gray II wrote:
> The difference is in binding.  {...} binds tighter than do...end, so:

Thanks!  (I was sure I had read about some difference.)  Thanks also for the 
example! (Which I'll have to think about a little ;-)

I did put your examples (and some variants) in IRB and got the same results 
you did, but I don't really understand why.  

Without the puts, both produce the same result:

irb(main):029:0> %w{cat bat rat}.map do |w| w.capitalize end
=> ["Cat", "Bat", "Rat"]
irb(main):030:0> %w{cat bat rat}.map {|w| w.capitalize}
=> ["Cat", "Bat", "Rat"]

I'm not clear on what binding tighter means, or to what--any further hints 
appreciated.

Randy Kramer

> irb(main):001:0> puts %w{cat bat rat}.map { |w| w.capitalize }
> Cat
> Bat
> Rat
> => nil
> irb(main):002:0> puts %w{cat bat rat}.map do |w|
> irb(main):003:1*   w.capitalize
> irb(main):004:1> end
> cat
> bat
> rat
> => nil
>
> Note how the block is associated with different methods here.  Add
> parenthesis as needed.
>
> James Edward Gray II