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https://issues.apache.org/jira/browse/GROOVY-7927?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Paul King closed GROOVY-7927.
-----------------------------
> Static type checking
> --------------------
>
> Key: GROOVY-7927
> URL: https://issues.apache.org/jira/browse/GROOVY-7927
> Project: Groovy
> Issue Type: Bug
> Components: Static compilation
> Affects Versions: 2.4.7
> Reporter: Cazacu Mihai
> Assignee: Jochen Theodorou
> Fix For: 2.4.8
>
>
> I have a problem running this code:
>
> {code:title=Test.groovy|borderStyle=solid}
> import groovy.transform.CompileStatic
> import java.util.function.Function
>
> @CompileStatic
> class Test {
> static void main(String[] args) {
> // this code fails
> Function<Integer, Integer> fct = { Integer n ->
> -n
> }
>
> // this one works but it is too verbose
> // Function<Integer, Integer> fct = ({ Integer n ->
> // -n
> // } as Function<Integer, Integer>)
>
> println fct.apply(10)
> }
> }
> {code}
> Error:
> {quote}
> Test.groovy: 9: [Static type checking] - Incompatible generic argument types.
> Cannot assign java.util.function.Function <java.lang.Integer,
> groovy.lang.Closure> to: java.util.function.Function <Integer, Integer>
> @ line 9, column 36.
> Function<Integer, Integer> fct = { Integer n ->
> ^
> 1 error
> {quote}
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