arrays can now be printed

tests/system/toString.nim

@@ -12,14 +12,16 @@ inf
 -inf
 nan
 nil
-nil'''
+nil
+(a: 0, b: nil)
+nil
+ptr (a: 0, b: nil)'''
 """
 
 echo($(@[23, 45]))
 echo($(@["", "foo", "bar"]))
 #echo($(["", "foo", "bar"]))
 #echo($([23, 45]))
-
 # bug #2395
 
 let alphaSet: set[char] = {'a'..'c'}
@@ -40,3 +42,30 @@ var x: seq[string]
 var y: string
 echo(x)
 echo(y)
+
+type
+  Foo = object
+    a: int
+    b: string
+
+var foo1: Foo
+var foo2: ref Foo
+var foo3: ptr Foo = foo1.addr
+
+echo foo1
+echo foo2
+echo foo3
+
+const
+  data = @['a','b', '\0', 'c','d']
+  dataStr = $data
+
+# ensure same result when on VM or when at program execution
+doAssert dataStr == $data
+
+import strutils
+# array test
+let arr = ['H','e','l','l','o',' ','W','o','r','l','d','!','\0']
+
+doAssert startsWith($arr, "[H, e, l, l, o,  , W, o, r, l, d, !,")
+doAssert newString(arr) == "Hello World!"