emptyList 是Kotlin 标准库中的一个函数,它返回一个空列表(List<Nothing> 类型)。这个空列表是不可变的,意味着你不能向其添加、删除或修改元素。emptyList 是一个泛型函数,所以你可以用它来创建任何类型的空列表,比如 emptyList<Int>()、emptyList<String>() 等。 给出Kotlin emptyList...
This article explored ways to remove null and empty values from a List in Kotlin. First, we discussed the programmatic approach involving iterating a list and removing any null or empty elements. Next, we saw how to use built-in methods to achieve the same goal. Remember that while the re...
kotlin 正在将类成员初始化为辅助构造函数中的emptyList如果你知道这个列表是空的，你就不需要把它当作一...
#1540 com.alibaba.fastjson2.JSONException: create instance error class kotlin.collections.EmptyList, offset 32 at com.alibaba.fastjson2.reader.ObjectReaderImplList.readJSONBObject(ObjectReaderImplList.java:461) ~[fastjson2-2.0.34.jar:na]...
我的目标是用switchIfEmpty实现逻辑，以检查本地DB中是否有数据可供接收，以及本地DB是否为空，可从...
How to set non-null string variable's value to empty if null value passed, How to elegantly create a map with only non-null values in Kotlin, How to validate multiple strings exist, are not null, and not empty, Behaviour of String.split for empty strings
import kotlinx.coroutines.flow.shareIn import me.him188.ani.app.data.models.preference.MediaSelectorSettings import me.him188.ani.utils.coroutines.flows.flowOfEmptyList import kotlin.coroutines.CoroutineContext /** @@ -53,6 +54,9 @@ class FilteredMediaSourceResults( } // 收集它们的 size if...
Quiz on Kotlin Set isNotEmpty Function - Learn how to use the isNotEmpty function in Kotlin to check if a set contains elements. Explore practical examples and enhance your Kotlin programming skills.
System.out.println(animal == list); 1. 2. 3. 4. 那null到底在什么位置呢?上面那个stack overflow问题有个答主说到: That is implementation specific, and you won't be able to see the representation ofnullin a pure Java program. (Butnullis represented as a zero machine address / pointer in...
Run isEmpty() on the returned list. Context MockK version: springmockk 2.0.1 (uses mockk 1.9.3) OS: macOS Mojave Kotlin version: 1.3.72 JDK version: 1.8.0_172 JUnit version: 4.13 Type of test: unit test 14:35:44.849 [main] DEBUG io.mockk.impl.instantiation.AbstractMockFactory - Creat...