Bikeshed opportunity: compose vs composeWith

[Remi Forax]

On 11/26/2012 11:57 PM, Brian Goetz wrote:
>>> I like the "then" convention to indicate sequencing.  In context:
>>>
>>> people.sort(comparing(Person::getLast)
>>>               .thenCompare(comparing(Person::getFirst)))
>>
>> or
>>    people.sort(comparing(Person::getLast, Person::getFirst))
>> (comparing is a static method so it can be annotated with @SafeVarargs).
>
> This one falls apart as there is no common supertype between
>   Function<Person, T extends Comparable<? super T>>
> and
>   IntFunction<Person>

You said in a previous mail that Function and IntFunction should not 
have the same function name
(apply, applyAsInt) but IntFunction is not a subtype of Function.
What is the rational about this decision ?

>
> so people will try
>
>   people.sort(comparing(Person::getLast, Person::getHeight))
>
> and be mystified by the error message they get.  And then ask for a 
> combinatorial explosion of comparing() methods.

Rémi