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/*
 * Copyright (C) 2016 HaiYang Li
 *
 * Licensed 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 com.landawn.abacus.util.function;

import com.landawn.abacus.util.N;

/**
 * Refer to JDK API documentation at: https://docs.oracle.com/javase/8/docs/api/java/util/function/package-summary.html
 * @since 0.8
 * 
 * @author Haiyang Li
 */
public interface LongPredicate extends java.util.function.LongPredicate {

   static final LongPredicate ALWAYS_TRUE = new LongPredicate() {
        @Override
        public boolean test(long value) {
            return true;
        }
    };

   static final LongPredicate ALWAYS_FALSE = new LongPredicate() {
        @Override
        public boolean test(long value) {
            return false;
        }
    };

   static final LongPredicate IS_ZERO = new LongPredicate() {
        @Override
        public boolean test(long value) {
            return value == 0;
        }
    };

   static final LongPredicate NOT_ZERO = new LongPredicate() {
        @Override
        public boolean test(long value) {
            return value != 0;
        }
    };

   static final LongPredicate IS_POSITIVE = new LongPredicate() {
        @Override
        public boolean test(long value) {
            return value > 0;
        }
    };

   static final LongPredicate NOT_POSITIVE = new LongPredicate() {
        @Override
        public boolean test(long value) {
            return value <= 0;
        }
    };

   static final LongPredicate IS_NEGATIVE = new LongPredicate() {
        @Override
        public boolean test(long value) {
            return value < 0;
        }
    };

   static final LongPredicate NOT_NEGATIVE = new LongPredicate() {
        @Override
        public boolean test(long value) {
            return value >= 0;
        }
    };

    @Override
    boolean test(long value);

    static LongPredicate equal(long targetLong) {
        return value -> value == targetLong;
    }

    static LongPredicate notEqual(long targetLong) {
        return value -> value != targetLong;
    }

    static LongPredicate greaterThan(long targetLong) {
        return value -> N.compare(value, targetLong) > 0;
    }

    static LongPredicate greaterEqual(long targetLong) {
        return value -> N.compare(value, targetLong) >= 0;
    }

    static LongPredicate lessThan(long targetLong) {
        return value -> N.compare(value, targetLong) < 0;
    }

    static LongPredicate lessEqual(long targetLong) {
        return value -> N.compare(value, targetLong) <= 0;
    }
}




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