To remove all elements from aMutable Listin Kotlin, callclear()function on this list object. The syntax of MutableList.clear() function is </> Copy MutableList.clear() Example In the following program, we will create a mutable list with some elements in it. We shall then clear the content...
var fromAutoCompleteArray: List<String> = ArrayList() 变成这样: val fromAutoCompleteArray: MutableList<String> = mutableListOf() 然后您应该能够调用其中的任何一个: fromAutoCompleteArray.clear() // <--- Removes all elements fromAutoCompleteArray.removeAt(0) // <--- Removes the first element 我...
list.remove(i); } } }public static void main(String[] args) { List<String> colors = new ArrayList<>(); colors.addAll(Arrays.asList("YELLOW", "RED", "RED", "BLUE"));filterList(colors, s -> s.equals("RED"));System.out.println(colors); // 不正确的输出: [YELLOW, RED, BLUE...
To remove all the occurrences, repeat the above process until there is no occurrence of this element in this list. We may use while loop for repeating the process. Examples In the following program, we will create a mutable list with some elements in it. We shall then remove the element9...
ThesortedDescendingmethod returns a list of all elements sorted descending according to their natural sort order. val revNums = nums.reversed() Thereversedmethod returns a list with elements in reversed order. val cars = listOf(Car("Mazda", 6300), Car("Toyota", 12400), ...
all 判断是否所有的元素都满足特定的条件 如果您有一个数组或数据元素列表,并且您想知道是否所有元素都满足特定的条件,那么您可以在Kotlin中使用all。 AI检测代码解析 //判断是否所有的元素都满足特定的条件 fun isStaisFyingFromElements(){ data class User(val id: Int, val name: String, val isBasketballLover...
override fun containsAll(elements: Collection<@UnsafeVariance E>): Boolean // Positional Access Operations /** * Returns the element at the specified index in the list. */ public operator fun get(index: Int): E // Search Operations
使用kotlinc编译器,我们可以编译源代码。 $ ls com/zetcode/ HelloKt.class 编译器在com/zetcode子文件夹中创建HelloKt.class。 $ kotlin com.zetcode.HelloKt Hello, World! 我们使用kotlin工具运行该程序。 打包Kotlin 程序 接下来,我们将展示如何将 Kotlin 程序打包到 Java JAR 文件中。
removeAll(elements: Collection): Boolean 移除集合中的一个集合,如果移除成功,则返回 true,失败则为 false clear(): Unit 将集合中的元素清空 4.遍历操作 和List 一样 fun main(args: Array<String>) { val muList : MutableList<Int> = mutableListOf(1,2,3) muList.add(4)//1,2,3,4 muList...
You can only derive from a class if the class is explicitly marked as open. 代码语言:javascript 代码运行次数:0 运行 AI代码解释 open class Base(p: Int) class Derived(p: Int) : Base(p) You also need an explicit syntax when a class has elements that can be overridden. For example, if...