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PollableReturn
===================================================================

.. currentmodule:: gi.repository.Gio


.. versionadded:: 2.60




.. class:: PollableReturn
   :no-contents-entry:






Return value for various IO operations that signal errors via the
return value and not necessarily via a :obj:`~gi.repository.GLib.Error`\.

This enum exists to be able to return errors to callers without having to
allocate a :obj:`~gi.repository.GLib.Error`\. Allocating :obj:`~gi.repository.GLib.Error` can be quite expensive for
regularly happening errors like :const:`~gi.repository.Gio.IOErrorEnum.WOULD_BLOCK`.

In case of :const:`~gi.repository.Gio.PollableReturn.FAILED` a :obj:`~gi.repository.GLib.Error` should be set for the
operation to give details about the error that happened.












Fields
------

.. rst-class:: interim-class

.. class:: PollableReturn
   :no-index:
   

   .. attribute:: FAILED

      The type of the None singleton.







   .. attribute:: OK

      The type of the None singleton.







   .. attribute:: WOULD_BLOCK

      The type of the None singleton.