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collection/
mgabstractlist__define.pro
Abstract class to define a list interface. This class is not intended to be instantiated, just to be inherited from.
Class description for mgabstractlist
Subclasses: mgarraylist
Properties
- version get
Fields
- version 0L
a counter that is incremented as the list is modified (so iterators know if the underlying list has changed)
Routines
mgabstractlist::getProperty [, version=long]mgabstractlist::add, elements [, position=integer]Add elements to the list.
result = mgabstractlist::count()Returns the number of elements in the list.
result = mgabstractlist::get( [/all] [, position=integer] [, count=integer] [, isa=string or strarr])Get elements of the list.
result = mgabstractlist::isContained(elements [, position=long])Determines whether a list contains specified elements.
mgabstractlist::move, source, destinationMove an element of the list to another position.
mgabstractlist::remove [, elements] [, position=long] [, /all]Remove specified elements from the list.
result = mgabstractlist::iterator()Creates an iterator to iterate through the elements of the list.
mgabstractlist::cleanupFree resouces.
result = mgabstractlist::init()Initialize list.
mgabstractlist__defineDefine member variables.
Routine details
topmgabstractlist::getProperty
mgabstractlist::getProperty [, version=long]
Keywords
- version out optional type=long
a counter that is incremented as the list is modified (so iterators know if the underlying list has changed)
topmgabstractlist::addabstract
mgabstractlist::add, elements [, position=integer]
Add elements to the list.
Parameters
- elements in required type=list type
scalar or vector array of the same type as the list
Keywords
- position in optional type=integer default=end of list
index to insert elements at (NOT IMPLEMENTED)
topmgabstractlist::countabstract
result = mgabstractlist::count()
Returns the number of elements in the list.
Return value
long integer
topmgabstractlist::getabstract
result = mgabstractlist::get( [/all] [, position=integer] [, count=integer] [, isa=string or strarr])
Get elements of the list.
Return value
element(s) of the list or -1L if no elements to return
Keywords
- all in optional type=boolean
set to return all elements
- position in optional type=integer
set to an index or an index array of elements to return; defaults to 0 if ALL keyword not set
- count out optional type=integer
set to a named variable to get the number of elements returned by this function
- isa in optional type=string or strarr
classname(s) of objects to return; only allowable if list type is object
topmgabstractlist::isContainedabstract
result = mgabstractlist::isContained(elements [, position=long])
Determines whether a list contains specified elements.
Return value
1B if contained or 0B if otherwise
Parameters
- elements in required type=type of list
scalar or vector of elements of the same type as the list
Keywords
- position out optional type=long
set to a named variable that will return the position of the first instance of the corresponding element of the specified elements
topmgabstractlist::moveabstract
mgabstractlist::move, source, destination
Move an element of the list to another position.
Parameters
- source in required type=long
index of the element to move
- destination in required type=long
index of position to move element
topmgabstractlist::removeabstract
mgabstractlist::remove [, elements] [, position=long] [, /all]
Remove specified elements from the list.
Parameters
- elements in optional type=type of list
elements of the list to remove
Keywords
- position in optional type=long
set to a scalar or vector array of indices to remove from the list
- all in optional type=boolean
set to remove all elements of the list
topmgabstractlist::iteratorabstract
result = mgabstractlist::iterator()
Creates an iterator to iterate through the elements of the list. The destruction of the iterator is the responsibility of the caller of this method.
Return value
MGAbstractIterator object
File attributes
| Modification date: | Tue Nov 20 11:24:28 2007 |
| Lines: | 154 |