Expected distribution of lambda sizes (Re: Syntax poll, take 2)
Maurizio Cimadamore
maurizio.cimadamore at oracle.com
Wed Jun 15 08:37:52 PDT 2011
On 15/06/11 16:00, John Nilsson wrote:
> On Wed, Jun 15, 2011 at 4:13 PM, Maurizio Cimadamore
> <maurizio.cimadamore at oracle.com> wrote:
>> <T, V extends Comparable<T>> List<V> schwarz(List<T> x, Function<T,
>> Pair<T,V>> f) {
>> return map(#{ w -> f.apply(w) }, x)
>> .sort( Pair<T,V>#fst() )
>> .map( Pair<T,V>#snd() );
>> }
> Could this become the following even?
>
> <T, V extends Comparable<T>>
> List<V> schwarz(List<T> x, Function<T,Pair<T,V>> f) {
> return x.map(f).sort(#fst).map(#snd);
> }
I see where you are headed, you want to use the target type in order to
infer the receiver type of the method reference; while this seems a nice
idea in principle, a problem I see with this is the potential ambiguity
with this#foo (which people might want to be able to shorten to just #foo).
Maurizio
>
> BR,
> John
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