list literal gotcha and suggestion
reinier at zwitserloot.com
Wed Oct 7 18:33:00 PDT 2009
This isn't a fair comparison. You should obviously add any code that
matches the following rough pattern:
List x = new ArrayList<T>();
Also, the very fact that list literals don't exist means people write
code differently. For example, instead of writing a method that'll
accept a list of foos, or accept a list of foos in a constructor, they
may instead have an addFoo() method which adds them one-at-a-time to
the list, even though the most likely usecase boils down to a bunch of
I use ImmutableList/ImmutableMap.of() almost every day.
On 2009/08/10, at 02:46, Lawrence Kesteloot wrote:
>> Seems like all sorts of configuration/static data/quick and
>> dirty/unittest/mock/etc types of syntax would benefit.
> That search returns 800 files out of a total of 11,300,000. That's one
> file in 14,125, or 0.007%.
> I would be against a feature which (1) has such an unclear correct
> specification; (2) provides so little advantage over a static
> ArrayList.of() and HashSet.of(); and (3) helps only one file in
> On the other hand, the idea (proposed twice in this discussion) of
> have a pair literal seems much more widely useful, and would allow
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