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Java example source code file (RealMatrixPreservingVisitor.java)

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The RealMatrixPreservingVisitor.java Java example source code

 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *      http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.

package org.apache.commons.math3.linear;

 * Interface defining a visitor for matrix entries.
 * @see DefaultRealMatrixPreservingVisitor
 * @since 2.0
public interface RealMatrixPreservingVisitor {
     * Start visiting a matrix.
     * <p>This method is called once before any entry of the matrix is visited.

* @param rows number of rows of the matrix * @param columns number of columns of the matrix * @param startRow Initial row index * @param endRow Final row index (inclusive) * @param startColumn Initial column index * @param endColumn Final column index (inclusive) */ void start(int rows, int columns, int startRow, int endRow, int startColumn, int endColumn); /** * Visit one matrix entry. * @param row row index of the entry * @param column column index of the entry * @param value current value of the entry */ void visit(int row, int column, double value); /** * End visiting a matrix. * <p>This method is called once after all entries of the matrix have been visited.

* @return the value that the <code>walkInXxxOrder must return */ double end(); }

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