Someone can correct me if I'm wrong, but the second example actually is a
hash.  You wrote:

u.update_attributes(:name =>"Fred", :color => "green")

The arguments you passed in are a hash.  It's the same thing as writing:

u.update_attributes({:name =>"Fred", :color => "green"})

Ruby (I think...or is it Rails?) gives you the freedom that if the 'last'
parameter passed to a method is a hash, you can omit the { } characters.

On Wed, Apr 25, 2012 at 1:21 PM, Dave Castellano <[email protected]>wrote:

> Working thru a Rails tutorial...
>
>
> Can anyone tell me why the first example uses braces and the second
> example uses parentheses?  Is it because 1st example is a hash literal,
> second is not?
>
> u = User.find(2)
> u.attributes = {:name =>"Fred", :color => "green"}
> u.save
>
>
> u = User.find(2)
> u.update_attributes(:name =>"Fred", :color => "green")
>
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