Time for an 2014 update…

Task/Multiple-distinct-objects/Groovy/multiple-distinct-objects-1.groovy

@@ -0,0 +1 @@
+def createFoos1 = { n -> (0..<n).collect { new Foo() } }

Task/Multiple-distinct-objects/Groovy/multiple-distinct-objects-2.groovy

@@ -0,0 +1,2 @@
+// Following fails, creates n references to same object
+def createFoos2 = {n -> [new Foo()] * n }

Task/Multiple-distinct-objects/Groovy/multiple-distinct-objects-3.groovy

@@ -0,0 +1,13 @@
+[createFoos1, createFoos2].each { createFoos ->
+    print "Objects distinct for n = "
+    (2..<20).each { n ->
+        def foos = createFoos(n)
+        foos.eachWithIndex { here, i ->
+            foos.eachWithIndex { there, j ->
+                assert (here == there) == (i == j)
+            }
+        }
+        print "${n} "
+    }
+    println()
+}