CheckedBiConsumer.java

package com.google.mu.function;

import static java.util.Objects.requireNonNull;

/** A binary consumer that can throw checked exceptions. */
@FunctionalInterface
public interface CheckedBiConsumer<A, B, E extends Throwable> {
  void accept(A a, B b) throws E;

  /**
   * Returns a new {@code CheckedBiConsumer} that also passes the inputs to {@code that}.
   */
  default <R> CheckedBiConsumer<A, B, E> andThen(
      CheckedBiConsumer<? super A, ? super B, ? extends E> that) {
    requireNonNull(that);
    return (a, b) -> {
      accept(a, b);
      that.accept(a,  b);
    };
  }
}