matz / zetabits.com (Yukihiro Matsumoto) writes:

> Hi,
> 
> In message "[ruby-talk:6550] Note on docs for Array#reverse!"
>     on 00/11/23, Robert Feldt <feldt / ce.chalmers.se> writes:
> |
> |"..., returning nil if arr is unchanged."
> |
> |does not fully describe the behavior
> 
> For reverse! behavior, `unchanged' means array size is either 0 or 1,
> and that's all.  Neither I nor Ruby check for array contents.  It
> costs a lot.

If I can add text without causing different pagination, I'll expand
the text under Array#reverse.


Dave