Added notes function example

Added notes function example under Composite Types showing how to return a list of field names
JuliaLang · Apr 22, 2014 · f227736 · f227736
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commit f227736
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diff --git a/doc/manual/types.rst b/doc/manual/types.rst
@@ -353,6 +353,15 @@ this implied type signature:
     julia> Foo((), 23.5, 1)
     ERROR: no method Foo((), Float64, Int64)
 
+You may find a list of field names using the ``names`` function.
+
+.. doctest::
+    julia> names(foo)
+    3-element Array{Any,1}:
+     :bar
+     :baz
+     :qux
+
 You can access the field values of a composite object using the
 traditional ``foo.bar`` notation: