>>This very useful little method is a nice thing to have in your
>>bag-o-tricks.
> 
> Nice. you could even call it #then:
> 
> class Object
>   def then
>     yield(self)
>     self
>   end
> end
> 
> #Then you could do these types of things:
> a = (0..10).to_a
> i = 3
> p a[i.then{i+=1}]
> p i
> 
> [..snip..]

But be carefull:

i = 3
p i.then{i+=1}
p i

i = [3]
p i.then{i << 4}
p i


output:
3
4
[3, 4]
[3, 4]


(perhaps this was obvious to all, except me)

cheers

Simon