""" Mutability -- Pyrex Implementation """ ########################################################################## # # SAGE: System for Algebra and Geometry Experimentation # # Copyright (C) 2006 William Stein <[email protected]> # # Distributed under the terms of the GNU General Public License (GPL) # http://www.gnu.org/licenses/ ########################################################################## cdef class Mutability: cdef bint _is_immutable cdef _require_mutable_cdef(self)