Merge pull request #2434 from gabrieldemarmiesse/test_memoryviews_6

Added tests for "typed memoryviews" part 6

docs/examples/userguide/memoryviews/np_flag_const.pyx

+import numpy as np
+
+cdef const double[:] myslice   # const item type => read-only view
+
+a = np.linspace(0, 10, num=50)
+a.setflags(write=False)
+myslice = a

docs/src/userguide/memoryviews.rst

@@ -161,13 +161,9 @@ Read-only views
 ---------------
 
 Since Cython 0.28, the memoryview item type can be declared as ``const`` to
-support read-only buffers as input::
+support read-only buffers as input:
 
-    cdef const double[:] myslice   # const item type => read-only view
-
-    a = np.linspace(0, 10, num=50)
-    a.setflags(write=False)
-    myslice = a
+.. literalinclude:: ../../examples/userguide/memoryviews/np_flag_const.pyx
 
 Using a non-const memoryview with a binary Python string produces a runtime error.
 You can solve this issue with a ``const`` memoryview: