Merge pull request #42 from takai/multiple_assignment

Alias to_ary for multiple assignment

Author: mrkn

ext/pycall/pycall.c

@@ -2078,6 +2078,7 @@ init_tuple(void)
   rb_define_singleton_method(cTuple, "new", pycall_tuple_s_new, -1);
   rb_define_method(cTuple, "length", pycall_tuple_length, 0);
   rb_define_method(cTuple, "to_a", pycall_tuple_to_a, 0);
+  rb_define_alias(cTuple, "to_ary", "to_a");
 }
 
 void

spec/pycall/tuple_spec.rb

@@ -22,6 +22,14 @@ module PyCall
       end
     end
 
+    describe '#to_ary' do
+      it 'is used for multiple assignment' do
+        (a1, a2, a3), (b1, b2, b3) = Tuple.new(subject, subject)
+        expect([a1, a2, a3]).to eq([1, 2, 3])
+        expect([b1, b2, b3]).to eq([1, 2, 3])
+      end
+    end
+
     describe '#inspect' do
       pending
     end