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/* list.vala
*
* Copyright (C) 2007 Jürg Billeter
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Author:
* Jürg Billeter <j@bitron.ch>
*/
/**
* An ordered collection.
*/
public interface Gee.List<G> : Collection<G> {
/**
* Returns a ListIterator that can be used for iteration over this list.
*
* @return a ListIterator that can be used for iteration over this list
*/
public abstract new ListIterator<G> list_iterator ();
/**
* Returns the item at the specified index in this list.
*
* @param index zero-based index of the item to be returned
*
* @return the item at the specified index in the list
*/
public abstract G get (int index);
/**
* Sets the item at the specified index in this list.
*
* @param index zero-based index of the item to be set
*/
public abstract void set (int index, G item);
/**
* Returns the index of the first occurence of the specified item in
* this list.
*
* @return the index of the first occurence of the specified item, or
* -1 if the item could not be found
*/
public abstract int index_of (G item);
/**
* Inserts an item into this list at the specified position.
*
* @param index zero-based index at which item is inserted
* @param item item to insert into the list
*/
public abstract void insert (int index, G item);
/**
* Removes the item at the specified index of this list.
*
* @param index zero-based index of the item to be removed
*
* @return the removed element
*/
public abstract G remove_at (int index);
/**
* Returns a slice of this list.
*
* @param start zero-based index of the begin of the slice
* @param stop zero-based index after the end of the slice
*
* @return A list containing a slice of this list
*/
public abstract List<G>? slice (int start, int stop);
/**
* Returns the first item of the list. Fails if the list is empty.
*
* @return first item in the list
*/
public abstract G first ();
/**
* Returns the last item of the list. Fails if the list is empty.
*
* @return last item in the list
*/
public abstract G last ();
/**
* Inserts items into this list for the input collection at the
* specified position.
*
* @param index zero-based index of the items to be inserted
* @param collection collection of items to be inserted
*/
public abstract void insert_all (int index, Collection<G> collection);
/**
* Sorts items by comparing with the specified compare function.
*
* @param compare_func compare function to use to compare items
*/
public abstract void sort (CompareFunc? compare_func = null);
/**
* The read-only view of this list.
*/
public abstract new List<G> read_only_view { owned get; }
/**
* Returns an immutable empty list.
*
* @return an immutable empty list
*/
public static List<G> empty<G> () {
return new LinkedList<G> ().read_only_view;
}
}
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