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view dwtx/jface/viewers/IElementComparer.d @ 10:b6c35faf97c8
Viewers
author | Frank Benoit <benoit@tionex.de> |
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date | Mon, 31 Mar 2008 00:47:19 +0200 |
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/******************************************************************************* * Copyright (c) 2000, 2006 IBM Corporation and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * IBM Corporation - initial API and implementation * Port to the D programming language: * Frank Benoit <benoit@tionex.de> *******************************************************************************/ module dwtx.jface.viewers.IElementComparer; /** * This interface is used to compare elements in a viewer for equality, * and to provide the hash code for an element. * This allows the client of the viewer to specify different equality criteria * and a different hash code implementation than the * <code>equals</code> and <code>hashCode</code> implementations of the * elements themselves. * * @see StructuredViewer#setComparer */ public interface IElementComparer { /** * Compares two elements for equality * * @param a the first element * @param b the second element * @return whether a is equal to b */ int opEquals(Object a, Object b); /** * Returns the hash code for the given element. * @param element the element the hash code is calculated for * * @return the hash code for the given element */ hash_t toHash(Object element); }