[Matrix-SIG] pickling of arrays

[David Ascher]

FYI, The following addition to Numeric.py will allow arrays to pickle
without needing to subclass Pickler.  Still inefficient, but helpful for
non-huge arrays.

--david

import copy_reg

def array_constructor(shape, typecode, thestr):
    x = fromstring(thestr, typecode)
    x.shape = shape
    return x

def pickle_array(a):
    return array_constructor, (a.shape, a.typecode(), a.tostring(),)  

copy_reg.pickle(ArrayType, pickle_array, array_constructor)