Updated State of the Lambda

[Brian Goetz]

> On Dec 12, 2011, at 3:21 AM, Stephen Colebourne wrote:
>
>> int sum = list.map(e ->  e.size()).reduce(0, (a, b) ->  a+b);

Though this is better stated as:

   int sum = list.map(E::size)
                 .reduce(0, Integer::plus);