Objetos celda

«Cell» objects are used to implement variables referenced by multiple scopes. For each such variable, a cell object is created to store the value; the local variables of each stack frame that references the value contain a reference to the cells from outer scopes which also use that variable. When the value is accessed, the value contained in the cell is used instead of the cell object itself. This de-referencing of the cell object requires support from the generated byte-code; these are not automatically de-referenced when accessed. Cell objects are not likely to be useful elsewhere.

type PyCellObject

La estructura C utilizada para objetos celda.

PyTypeObject PyCell_Type

El objeto tipo correspondiente a los objetos celda.

int PyCell_Check(PyObject *ob)

Retorna verdadero si ob es un objeto de celda; ob no debe ser NULL. Esta función siempre finaliza con éxito.

PyObject *PyCell_New(PyObject *ob)

Return value: New reference.

Crea y retorna un nuevo objeto de celda que contiene el valor ob. El parámetro puede ser NULL.

PyObject *PyCell_Get(PyObject *cell)

Return value: New reference.

Return the contents of the cell cell, which can be NULL. If cell is not a cell object, returns NULL with an exception set.

PyObject *PyCell_GET(PyObject *cell)

Return value: Borrowed reference.

Retorna el contenido de la celda cell, pero sin verificar que cell no sea NULL y que sea un objeto de celda.

int PyCell_Set(PyObject *cell, PyObject *value)

Set the contents of the cell object cell to value. This releases the reference to any current content of the cell. value may be NULL. cell must be non-NULL.

On success, return 0. If cell is not a cell object, set an exception and return -1.

void PyCell_SET(PyObject *cell, PyObject *value)

Establece el valor del objeto de celda cell en el valor value. No se ajustan los recuentos de referencia y no se realizan verificaciones de seguridad; cell no debe ser NULL y debe ser un objeto de celda.