Merge pull request #4 from 7NXT/feature-03-get-a-key-from-an-array

fixing `undefined method `has_key?'` when an array is as element given

lib/rodash.rb

@@ -164,7 +164,7 @@ def self.isKey(value, object)
     return true if value.is_a? Numeric
     return !value.is_a?(Array) &&
       (@@reIsPlainProp =~ value || !@@reIsDeepProp =~ value ||
-        (!object.nil? && object.has_key?(value)))
+        (!object.nil? && !object.is_a?(Array) && object.has_key?(value)))
   end
 
   def self.baseToPath(value)

test/test_rodash.rb

@@ -141,6 +141,13 @@ class GetTest < Test::Unit::TestCase
     end
   end
 
+  should "get a key from an array" do
+    object = {'a' => 1}, {'a' => 2}
+
+    assert_equal Rodash.get(object, '[0].a'), 1
+    assert_equal Rodash.get(object, '[1].a'), 2
+  end
+
   should "no coerce array paths to strings" do
     object = {'a,b,c' => 3, 'a' => { 'b' => { 'c' => 4 } } }
     assert_equal Rodash.get(object, ['a', 'b', 'c']), 4