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From: Lew <lewbloch@gmail.com>
Newsgroups: comp.lang.java.programmer
Subject: Re: Immutable Datastructures with good Sharing
Date: Sun, 6 Nov 2011 17:29:30 -0800 (PST)
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Giovanni Azua wrote:
> Lew wrote:
>> Giovanni Azua wrote:
>>> I really enjoy the improvement in code readability as well, it suits the
>>> appropriate template types e.g.
>>> 
>>> // from
>>> List<RequestData> requests = new ArrayList<RequestData>();
>>> 
>>> // to
>>> List<RequestData> requests = Lists.newArrayList();
>>> 
>> 
>> I'm not saying anything against Guava, but I fail to see the advantage of that
>> particular idiom.  'Lists.newArrayList' vs. 'new ArrayList<>' - eh, mezza
>> mezz'.
>> 
> I don't blame you. I had the same resistant first reaction when I was
> proposed to use Guava. Then something magical happened :) I realized that
> when you use new with Collections, generally you have to tell the compiler
> two times what you want namely the generic parameter. I think that having to
> do the same thing two times in development is always a bad thing: two times
> harder to maintain, two times the amount of possible mistakes and in short,
> two times the amount of work.

The diamond operator mitigates that, and the two characters of it are smaller than the overhead of pulling in a whole other class.

I think pulling in a whole utility class at runtime because you're too lazy to type two extra characters, or even a dozen, is silly.  Roofers are laughing at your idea of too much work.

But that's just me.

-- 
Lew