why is def accept(File file) {file.isDirectory||file.getName() ==~ pattern} incompatible with boolean java.io.FileFilter.accept(java.io.File file)?

because 'def' means 'Object' in Java.

boo lets me def foo() as bool, is there any way to do a similar cast, some way to specify a return type?

aka help how do i overload a method with a non-Object return type

just use 'boolean' as the return type instead of 'def'

boolean accept(File file) {file.isDirectory||file.getName() ==~ pattern}

i was not away def was so literally the same as Object

i thought there was implicit typing

def essentially means untyped.

You coming from Ruby?

Read http://groovy.codehaus.org/Scoping+and+the+Semantics+of+%22def%22

That URL gave the following error code: 404 Unknown page Scoping+and+the+Semantics+of+"def

Second half of at least.

i'm coming from Boo