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Mauro Molinari commented on GROOVY-9240: ---------------------------------------- This one gives the same error: {code} folder.traverse(type: FileType.FILES, nameFilter: ~/.../) { println it } {code} (I didn't know I can omit the {{[ ]}} parenthesis). This one instead works: {code} folder.traverse([ type: (Object) FileType.FILES, nameFilter: ~/.*\.(?i)pdf/ ]) { println it } {code} My workaround is, however: {code} folder.traverse([ type: (Object) FileType.FILES, nameFilter: ~/.*\.(?i)pdf/ ] as Map<String, Object>) { println it } {code} > Better signature for ResourceGroovyMethods.traverse(File, Map<String, > Object>, Closure) (and overloadings) > ---------------------------------------------------------------------------------------------------------- > > Key: GROOVY-9240 > URL: https://issues.apache.org/jira/browse/GROOVY-9240 > Project: Groovy > Issue Type: Improvement > Components: groovy-jdk > Affects Versions: 2.5.8 > Reporter: Mauro Molinari > Priority: Major > Time Spent: 10m > Remaining Estimate: 0h > > When you try to perform the following invocation in a statically > checked/compile Groovy class you'll get a compilation error: > {code:groovy} > myFolder.traverse([ > type: FileType.FILES, > nameFilter: ~/.*\.(?i)pdf/ > ]) { println it } > {code} > The error is: > {noformat} > Groovy:[Static type checking] - Cannot call > java.io.File#traverse(java.util.Map <java.lang.String, java.lang.Object>, > groovy.lang.Closure) with arguments [java.util.LinkedHashMap > <java.lang.String, java.io.Serializable>, groovy.lang.Closure] > {noformat} > I think that more flexible and static type checker-friendly signatures for > the {{traverse}} methods would be: > {{ResourceGroovyMethods.traverse(File, Map<String, ?>, Closure)}} > {{ResourceGroovyMethods.traverse(File, Map<String, ?>)}} -- This message was sent by Atlassian Jira (v8.3.2#803003)