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From Gary Gregory <garydgreg...@gmail.com>
Subject Re: Pair of nulls
Date Thu, 11 May 2017 05:03:55 GMT
On Wed, May 10, 2017 at 9:27 PM, Matt Sicker <boards@gmail.com> wrote:

> Wouldn't it make sense to expose typed methods like in
> Collections.emptyList() et al.?
>

So in this case:

ImmutablePair.nullPair()

Gary

>
> On 10 May 2017 at 22:10, Javen O'Neal <onealj@apache.org> wrote:
>
> > +1
> >
> > The of method should check if all elements are null, and if so to return
> > the NULL singleton. This would reduce the number of objects created and
> > garbage collected.
> >
> > So long as ImmutablePair and ImmutableTriple classes are final (not
> > subclassable), then identity checking could be used in place of equality
> > checking when comparing against a null tuple. This would be marginally
> > faster.
> >
> > Any preference of being explicit (redundant) here?
> > ImmutablePair.NULL_PAIR and ImmutableTriple.NULL_TRIPLE
> >
> > On May 10, 2017 7:35 PM, "Gary Gregory" <garydgregory@gmail.com> wrote:
> >
> > Hi All,
> >
> > Any thoughts for or against adding the following to ImmutablePair:
> >
> >
> >     /**
> >      * An immutable pair of nulls.
> >      */
> >     // This is not defined with generics to avoid warnings in call sites.
> >     @SuppressWarnings("rawtypes")
> >     public static final ImmutablePair NULL = ImmutablePair.of(null,
> null);
> >
> > Same for ImmutableTriple.
> >
> > ?
> >
> > Thank you,
> > Gary
> >
> > --
> > E-Mail: garydgregory@gmail.com | ggregory@apache.org
> > Java Persistence with Hibernate, Second Edition
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> >
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>
>
>
> --
> Matt Sicker <boards@gmail.com>
>



-- 
E-Mail: garydgregory@gmail.com | ggregory@apache.org
Java Persistence with Hibernate, Second Edition
<https://www.amazon.com/gp/product/1617290459/ref=as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=1617290459&linkCode=as2&tag=garygregory-20&linkId=cadb800f39946ec62ea2b1af9fe6a2b8>

<http:////ir-na.amazon-adsystem.com/e/ir?t=garygregory-20&l=am2&o=1&a=1617290459>
JUnit in Action, Second Edition
<https://www.amazon.com/gp/product/1935182021/ref=as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=1935182021&linkCode=as2&tag=garygregory-20&linkId=31ecd1f6b6d1eaf8886ac902a24de418%22>

<http:////ir-na.amazon-adsystem.com/e/ir?t=garygregory-20&l=am2&o=1&a=1935182021>
Spring Batch in Action
<https://www.amazon.com/gp/product/1935182951/ref=as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=1935182951&linkCode=%7B%7BlinkCode%7D%7D&tag=garygregory-20&linkId=%7B%7Blink_id%7D%7D%22%3ESpring+Batch+in+Action>
<http:////ir-na.amazon-adsystem.com/e/ir?t=garygregory-20&l=am2&o=1&a=1935182951>
Blog: http://garygregory.wordpress.com
Home: http://garygregory.com/
Tweet! http://twitter.com/GaryGregory

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