question_attempt_iterator Class Reference

A class abstracting access to the question_usage_by_activity::$questionattempts array. More...

Inheritance diagram for question_attempt_iterator:

Public Member Functions
	__construct (question_usage_by_activity $quba)
	To create an instance of this class, use question_usage_by_activity::get_attempt_iterator(). More...
	current ()
	Standard part of the Iterator interface. More...
	key ()
	Standard part of the Iterator interface. More...
	next ()
	Standard part of the Iterator interface.
	offsetExists ($slot)
	Standard part of the ArrayAccess interface. More...
	offsetGet ($slot)
	Standard part of the ArrayAccess interface. More...
	offsetSet ($slot, $value)
	Standard part of the ArrayAccess interface. More...
	offsetUnset ($slot)
	Standard part of the ArrayAccess interface. More...
	rewind ()
	Standard part of the Iterator interface.
	valid ()
	Standard part of the Iterator interface. More...

Protected Attributes
question_usage_by_activity	$quba
	that we are iterating over.
array	$slots
	of slot numbers.

Detailed Description

A class abstracting access to the question_usage_by_activity::$questionattempts array.

This class snapshots the list of question_attempts to iterate over when it is created. If a question is added to the usage mid-iteration, it will now show up.

To create an instance of this class, use question_usage_by_activity::get_attempt_iterator()

Copyright

2009 The Open University

License

http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

Constructor & Destructor Documentation

__construct()

question_attempt_iterator::__construct

(

question_usage_by_activity

$quba

)

To create an instance of this class, use question_usage_by_activity::get_attempt_iterator().

Parameters

question_usage_by_activity

$quba

the usage to iterate over.

Member Function Documentation

current()

question_attempt_iterator::current

(

)

Standard part of the Iterator interface.

Return values

question_attempt

key()

question_attempt_iterator::key

(

)

Standard part of the Iterator interface.

Return values

int

offsetExists()

question_attempt_iterator::offsetExists

(

$slot

)

Standard part of the ArrayAccess interface.

Parameters

int

$slot

Return values

bool

offsetGet()

question_attempt_iterator::offsetGet

(

$slot

)

Standard part of the ArrayAccess interface.

Parameters

int

$slot

Return values

question_attempt

offsetSet()

question_attempt_iterator::offsetSet	(		$slot,
			$value
	)

Standard part of the ArrayAccess interface.

Parameters

int	$slot
question_attempt	$value

offsetUnset()

question_attempt_iterator::offsetUnset

(

$slot

)

Standard part of the ArrayAccess interface.

Parameters

int

$slot

valid()

question_attempt_iterator::valid

(

)

Standard part of the Iterator interface.

Return values

bool

---

The documentation for this class was generated from the following file:

• question/engine/questionusage.php