groovy-users mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Guillaume Laforge <glafo...@gmail.com>
Subject Re: Syntax question using (identifier 1, identifier 2) on LHS of =
Date Fri, 27 Jan 2017 19:15:08 GMT
Actually, scratch that, the def is required.
Somehow, I feel that it could be made optional, and that would be more
elegant :-)

On Fri, Jan 27, 2017 at 8:13 PM, Guillaume Laforge <glaforge@gmail.com>
wrote:

> I wouldn't use the def:
>
> (String string1, String string2) = "part1-part2".tokenize("-")
>
> (the def is redundant there)
>
> On Fri, Jan 27, 2017 at 7:55 PM, Dinko Srko─Ź <dinko.srkoc@gmail.com>
> wrote:
>
>> On 27 January 2017 at 19:15, Les Hartzman <lhartzman@gmail.com> wrote:
>> > Hi,
>> >
>> > I just saw a reference to using the above syntax, specifically as
>> follows:
>> >
>> >    def (string1, string2) = "part1-part2".tokenize("-")
>> >
>> > This assigns string1 "part1" and string2 "part2".
>> >
>> > So my main question is what is this referred to as?
>>
>> It's called multiple assignment.
>>
>> >
>> > You can't do:
>> >
>> >    String (string1, string2) =  "part1-part2".tokenize("-")
>>
>> Well, you couldn't. What if types were different?
>>
>> But you could do it like this:
>>
>>   def (String string1, String string2) = "part1-part2".tokenize("-")
>>
>> More on multiple assignments here:
>> http://groovy-lang.org/semantics.html#_multiple_assignment
>>
>> Cheers,
>> Dinko
>>
>> >
>> > I did find out that you can do:
>> >
>> >    String string1
>> >    String string2
>> >    (string1, string2) =  "part1-part2".tokenize("-")
>> >
>> > Thanks.
>> >
>> > Les
>> >
>>
>
>
>
> --
> Guillaume Laforge
> Apache Groovy committer & PMC Vice-President
> Developer Advocate @ Google Cloud Platform
>
> Blog: http://glaforge.appspot.com/
> Social: @glaforge <http://twitter.com/glaforge> / Google+
> <https://plus.google.com/u/0/114130972232398734985/posts>
>



-- 
Guillaume Laforge
Apache Groovy committer & PMC Vice-President
Developer Advocate @ Google Cloud Platform

Blog: http://glaforge.appspot.com/
Social: @glaforge <http://twitter.com/glaforge> / Google+
<https://plus.google.com/u/0/114130972232398734985/posts>

Mime
View raw message