本文整理了Java中io.vavr.collection.HashSet.head()方法的一些代码示例，展示了HashSet.head()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。HashSet.head()方法的具体详情如下：
包路径：io.vavr.collection.HashSet
类名称：HashSet
方法名：head

HashSet.head介绍

暂无

代码示例

代码示例来源：origin: vavr-io/vavr

@Override
public HashSet<T> tail() {
  if (tree.isEmpty()) {
    throw new UnsupportedOperationException("tail of empty set");
  }
  return remove(head());
}

代码示例来源：origin: io.vavr/vavr

@Override
public HashSet<T> tail() {
  if (tree.isEmpty()) {
    throw new UnsupportedOperationException("tail of empty set");
  }
  return remove(head());
}

代码示例来源：origin: vavr-io/vavr-jackson

@Test
public void testHashSetClass() throws Exception {
  HashSetClass src = new HashSetClass(HashSet.of(new ImplementedClass()));
  String json = MAPPER.writeValueAsString(src);
  HashSetClass restored = MAPPER.readValue(json, HashSetClass.class);
  Assert.assertEquals(restored.value.head().getClass(), ImplementedClass.class);
}

代码示例来源：origin: vavr-io/vavr-jackson

@Test
public void testHashSet() throws Exception {
  HashSet<A> src = HashSet.of(new B("a", "b"));
  String json = MAPPER.writeValueAsString(new HashSetPojo().setValue(src));
  Assert.assertEquals(json, "{\"value\":[{\"ExtFieldsPojoTest$B\":{\"a\":\"a\",\"b\":\"b\"}}]}");
  HashSetPojo pojo = MAPPER.readValue(json, HashSetPojo.class);
  HashSet<A> restored = pojo.getValue();
  Assert.assertEquals(restored.filter(e -> e instanceof B).length(), 1);
  Assert.assertEquals(restored.head().a, "a");
  Assert.assertEquals(((B) restored.head()).b, "b");
}