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/*******************************************************************************
 * Copyright (c) 2015-2018 Skymind, Inc.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Apache License, Version 2.0 which is available at
 * https://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.
 *
 * SPDX-License-Identifier: Apache-2.0
 ******************************************************************************/

package org.datavec.api.transform;

/**
 * A string reduce op is used for combining strings such as
 * merging, appending, or prepending.
 *
 * The following ops are supported:
 * PREPEND: prepend the first string to the second
 * APPEND: append the first string to the second
 * MERGE: Merge the 2 strings
 * FORMAT: Apply the format (the first column, to the string separated list via csv)
 * @author Adam Gibson
 */
public enum StringReduceOp {
    PREPEND, APPEND, MERGE, REPLACE
}