It has been quite successful in that and this is the reason because Google has chosen to officially support Kotlin as a first-class language for Android development. The main consequence is that, if you come from the Java world, you can immediately start using Kotlin in your existing Java pr...
toList()}") } data class Test(val name: String, val age: Int) 一个完整的序列包括两个操作,即中间序列和末端序列,中间序列操作始终都是惰性的,末端序列操作触发所有的惰性计算。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 //中间操作 //末端操作 testList.asSequence(). filter {..}.map ...
kotlinc -X Usage: kotlinc-jvm <options> where advanced options include: -Xadd-compiler-builtins Add definitions of built-in declarations to the compilation classpath (useful with -no-stdlib) -Xadd-modules=<module[,]> Root modules to resolve in addition to the initial modules, or all modul...
1. Add Kotlin support to existing projects All you need to do is modify two build.gradle's...
You can add dynamic dependencies to the notebook using the following annotations: @file:DependsOn(<coordinates>):In this annotation, you need to specify the coordinates of the dependency. This annotation adds artifacts (like JAR files) to the notebook's classpath. It supports absolute and relat...
class MainActivity : AppCompatActivity() { var mCompressManager: CompressManager? = null override fun onDestroy() { /** * 需要避免的写法 if (mCompressManager != null){ mCompressManager!!.removeListener() mCompressManager == null }
我在class(CustomCalendar.kt中有一个函数,我在CustomCalendar中使用了一个月的函数,但是在这两天中我得到了不同的错误。所以这个错误是 java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.ViewTreeObserver android.widget.ScrollView.getViewTreeObserver()' on a null object ...
KT-75578K2: False negative [SUPER_CALL_WITH_DEFAULT_PARAMETERS] when calling the upper-class implementation of a method with the default value argument KT-75965The iOS app did not run successfully in Release mode Native KT-75807CMP caching fails for iOS with Kotlin 2.1.20-RC2 ...
It allows user to create a new class (derived class) from an existing class (base class). The derived class inherits all the features from the base class and can have additional features of its own. Before going into details about Kotlin inheritance, we recommend you to check these two ...
When launch, async, or runBlocking are used to start a new coroutine, they automatically create the corresponding scope. All of these functions take a lambda with a receiver as an argument, and CoroutineScope is the implicit receiver type: launch { /...