| cdef extern from "<functional>" namespace "std" nogil: | |
| cdef cppclass function[T]: | |
| function() except + | |
| function(T*) except + | |
| function(function&) except + | |
| function(void*) except + | |
| function operator=(T*) | |
| function operator=(function&) | |
| function operator=(void*) | |
| function operator=[U](U) | |
| bint operator bool() | |