[Python-3000] C API changes? [Was: Python 3000 Process]

["Martin v. Löwis"]

Thomas Wouters wrote:
> For the old and ignorant among us (although I concede I may be the only 
> one) could someone explain 'designated initializers' and how the code 
> would look? 

These are like keyword arguments. To initialize 
mmapmodule.c:mmap_object_type, you would write

static PyTypeObject mmap_object_type = {
    PyObject_HEAD_INIT(0)
    .tp_name =          "mmap.mmap",
    .tp_size =          sizeof(mmap_object),
    .tp_dealloc =       mmap_object_dealloc,
    .tp_getattr =       mmap_object_getattr,
    .tp_as_sequence =   &mmap_as_sequence,
    .tp_as_buffer =     &mmap_as_buffer,
    .tp_flags =         Py_TPFLAGS_HAVE_GETCHARBUFFER,
};

Everything not mentioned is null-initialized; order of fields does
not matter.

FWIW, the same is also available for arrays:

char *hash[1000] = { [317] = "foo", [220] = "bar" };

Regards,
Martin