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:trollface: unshift 灵感来源:https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Array/unshift

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achao 2022-08-02 09:33:15 +08:00 committed by VampireAchao
parent e6c7dfa047
commit 236ebba3a8
2 changed files with 8 additions and 6 deletions
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4
hutool-core/src/main/java/cn/hutool/core/stream/FastStream.java
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@ -1114,7 +1114,7 @@ public class FastStream<T> implements Stream<T>, Iterable<T> {
* @param obj 元素 * @param obj 元素
* @return 流 * @return 流
*/ */
public FastStream<T> addFirst(T obj) { public FastStream<T> unshift(T obj) {
return FastStream.concat(Stream.of(obj), this.stream); return FastStream.concat(Stream.of(obj), this.stream);
} }
@ -1125,7 +1125,7 @@ public class FastStream<T> implements Stream<T>, Iterable<T> {
* @return 流 * @return 流
*/ */
@SafeVarargs @SafeVarargs
public final FastStream<T> addFirst(T... obj) { public final FastStream<T> unshift(T... obj) {
return FastStream.concat(ofStream(obj), this.stream); return FastStream.concat(ofStream(obj), this.stream);
} }

10
hutool-core/src/test/java/cn/hutool/core/stream/FastStreamTest.java
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@ -100,7 +100,8 @@ public class FastStreamTest {
put("1", 1); put("1", 1);
put("2", 2); put("2", 2);
put("3", 3); put("3", 3);
}}, identityMap); }
}, identityMap);
} }
@Test @Test
@ -115,7 +116,8 @@ public class FastStreamTest {
put("1", singletonList(1)); put("1", singletonList(1));
put("2", singletonList(2)); put("2", singletonList(2));
put("3", singletonList(3)); put("3", singletonList(3));
}}, group); }
}, group);
} }
@Test @Test
@ -230,9 +232,9 @@ public class FastStreamTest {
} }
@Test @Test
public void testAddFirst() { public void testUnshift() {
List<Integer> list = Arrays.asList(2, 3); List<Integer> list = Arrays.asList(2, 3);
List<Integer> unshift = FastStream.of(list).addFirst(1).toList(); List<Integer> unshift = FastStream.of(list).unshift(1).toList();
Assert.assertEquals(Arrays.asList(1, 2, 3), unshift); Assert.assertEquals(Arrays.asList(1, 2, 3), unshift);
} }