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https://issues.apache.org/jira/browse/GROOVY-7729?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Pascal Schumacher closed GROOVY-7729.
-------------------------------------
Resolution: Won't Fix
Hi Fabiano,
thanks for reporting. Sadly expressing the return type of sum() just using
generics is not possible, see
[http://www.groovy-lang.org/mailing-lists.html#nabble-td5722710|a5722724] for a
discussion (especially Cédrics comment).
> DefaultGroovyMethods.sum(Iterable) is not CompileStatic aware
> -------------------------------------------------------------
>
> Key: GROOVY-7729
> URL: https://issues.apache.org/jira/browse/GROOVY-7729
> Project: Groovy
> Issue Type: Bug
> Components: groovy-jdk
> Affects Versions: 2.4.4, 2.4.5
> Environment: JDK 1.8.0_51/win32
> Reporter: Fabiano Biagini
> Priority: Minor
>
> {noformat}
> @groovy.transform.CompileStatic
> void bug() {
> int a = [1,2,3].sum()
> }
> {noformat}
> The code above works correctly with CompileDynamic, but CompileStatic will
> produce the following error:
> {noformat}
> [Static type checking] - Cannot assign value of type java.lang.Object to
> variable of type int
> {noformat}
> Seems to be a problem of DefaultGroovyMethods.sum(Iterable).
> I think it just need to be changed from
> {noformat}
> public static Object sum(Iterable self)
> {noformat}
> to
> {noformat}
> public static <T> T sum(Iterable<T> self)
> {noformat}
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