15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25 package java.util.function;
26
27 /**
28 * Apply a function to the input object yielding an appropriate {@code double}
29 * value; this is the {@code double}-bearing specialization for {@link Function}.
30 *
31 * @param <T> the type of input objects to the function
32 *
33 * @since 1.8
34 */
35 public interface DoubleFunction<T> {
36
37 /**
38 * Apply a function to the input object yielding an appropriate
39 * {@code double} value.
40 *
41 * @param t the input object
42 * @return the function result value
43 */
44 public double applyAsDouble(T t);
45 }
|
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25 package java.util.function;
26
27 /**
28 * Apply a function to the input object yielding an appropriate {@code double}
29 * value; this is the {@code double}-bearing specialization for {@link Function}.
30 *
31 * @param <T> the type of input objects to the function
32 *
33 * @since 1.8
34 */
35 public interface DoubleFunction<T> extends Function<T,Double> {
36
37 @Override
38 public default Double apply(T t) { return applyAsDouble(t); }
39
40 /**
41 * Apply a function to the input object yielding an appropriate
42 * {@code double} value.
43 *
44 * @param t the input object
45 * @return the function result value
46 */
47 public double applyAsDouble(T t);
48 }
|