JEP 286: Local-Variable Type Inference: Usage

Kevin Rushforth kevin.rushforth at
Thu Mar 29 18:41:37 UTC 2018

I tend to agree, so I would prefer to see them used judiciously. The 
write-up by Stuart (referenced below) raised some good points about when 
to use them vs when you might not want to.

-- Kevin

Artem Ananiev wrote:
> On 2018/03/29 9:36, Kevin Rushforth wrote:
>> As a prerequisite, we would need to update the minimum boot JDK to JDK
>> 10, which I was going to propose doing anyway -- it seems the right time
>> now that JDK 10 is out.
>> I have no objections to then allowing the use of 'var' in new code.
>> Do any others have any concerns?
> My personal experience with "var"s - they are used a lot in Scala, for 
> example - is they make code very unreadable, especially when working 
> with collections and streams. The only case when a "var" is suitable 
> is new object creation:
> var object = new SomeType()
> In all other cases they are more painful than valuable.
> I can say it differently. It's very easy to use "var"s wrong. No 
> matter what style guides are available, people will often use them in 
> a way that makes code less readable.
> Just my $0.02
> Thanks,
> Artem
>> -- Kevin
>> Nir Lisker wrote:
>>> Hello,
>>> A style guide for usage of 'var' has been published at
>>> Can we start 
>>> using
>>> this feature in contributions to OpenJFX?
>>> - Nir

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