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// ============================================================================
// Copyright (c) 2017-2021 Nawapunth Manusitthipol (NawaMan - http://nawaman.net)
// ----------------------------------------------------------------------------
// MIT License
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
// ============================================================================
package functionalj.function.aggregator;
import functionalj.lens.lenses.DoubleAccessPrimitive;
import functionalj.stream.collect.CollectedToDouble;
import functionalj.stream.collect.CollectorToDoublePlus;
public interface AggregatorToDouble extends DoubleAccessPrimitive, Aggregator {
public CollectedToDouble asCollected();
//== Implementation ==
public static class Impl implements AggregatorToDouble, Aggregator {
private final CollectedToDouble collected;
public Impl(CollectorToDoublePlus collector) {
this.collected = CollectedToDouble.of(collector);
}
@Override
public double applyAsDouble(SOURCE host) {
collected.accumulate(host);
return collected.finishToDouble();
}
public CollectedToDouble asCollected() {
return collected;
}
}
}
