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/*
 * 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,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.commons.math3.linear;

import org.apache.commons.math3.FieldElement;

/**
 * Default implementation of the {@link FieldMatrixChangingVisitor} interface.
 * 

* This class is a convenience to create custom visitors without defining all * methods. This class provides default implementations that do nothing. *

* * @param the type of the field elements * @since 2.0 */ public class DefaultFieldMatrixChangingVisitor> implements FieldMatrixChangingVisitor { /** Zero element of the field. */ private final T zero; /** Build a new instance. * @param zero additive identity of the field */ public DefaultFieldMatrixChangingVisitor(final T zero) { this.zero = zero; } /** {@inheritDoc} */ public void start(int rows, int columns, int startRow, int endRow, int startColumn, int endColumn) { } /** {@inheritDoc} */ public T visit(int row, int column, T value) { return value; } /** {@inheritDoc} */ public T end() { return zero; } }




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