RFR 8135248: Add utility methods to check indexes and ranges

[Paul Sandoz]

On 21 Sep 2015, at 18:11, Peter Levart <peter.levart at gmail.com> wrote:
>> I would be happy to sacrifice the use-case in AbstractStringBuilder for using BiFunction<Integer, Integer, RuntimeException>, and add appropriate constructors or factory methods on the common exception types for method ref usage.
>> 
>> Paul.
> 
> Don't forget that AbstractStringBuilder is used in String concatenation which might be used very early in the life of VM and that lambdas need invokedynamic which initializes java.lang.invoke infrastructure which doesn't work currently if it happens before System class loader is initialized... (same chicken-egg issues as with string concatenation JEP by Alexey Shipilev - they can be solved though, but it would be easier to not need lambdas if possible. They don't make code look any nicer in these cases anyway).
> 

It’s very much on my mind :-) in some cases we cannot use lambdas/method refs.

Paul.