We can use delay if we wrap it into runBlocking {} that starts a coroutine and waits until it's done: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 runBlocking { delay(2000) } So, first the resulting program prints Start, then it runs a coroutine through launch {}, then it runs...
classUser(val id:Int,val name:String,val address:String)funsaveUser(user:User){if(user.name.isEmpty()){throwIllegalArgumentException("Can't save user ${user.id}: empty Name")}if(user.address.isEmpty()){throwIllegalArgumentException("Can't save user ${user.id}: empty Address")}// Sa...
该函数是一个顶层函数,用于返回一个上下文是SupervisorJob() + Dispatchers.Main的作用域,该作用域常被使用在Activity/Fragment,并且在界面销毁时要调用fun CoroutineScope.cancel(cause: CancellationException? = null)对协程进行取消,这是官方库中可以在开发中使用的一个用于获取作用域的顶层函数,使用示例在官方库的...
@NotNull Continuation $completion) { Object $continuation; label25: { if ($completion instanceof <undefinedtype>) { $continuation = (<undefinedtype>)$completion; if (((<undefinedtype>)$continuation).label & Integer.MIN_VALUE) != 0) { ((<undefinedtype>)$continuation).label -= Integer.MIN...
在Kotlin中,函数在if-else块之前被解析,所以.let { print(it) }只适用于最后的else if。所以在这种情况下,第一个if语句的结果将不会被使用,函数将立即返回。为了避免这种情况,你可以将整个if ... else ... 包裹在小括号中,然后在其上加上.let。
In theadd-kernelscript, thenameargument is required if thejdkargument is not specified. Alternatively, if thejdkargument is specified, but thenameargument is not, then the name is taken from theJDK $vendor $versionargument, which is detected from the JDK. ...
The default value isLABEL_ALIGNEDwhen a label is provided for the row,INDEPENDENTotherwise. row("Label:"){textField()}row("Long label:"){textField()} Here both labels are aligned together because rows haveLABEL_ALIGNEDby default. If an independent layout is needed, thenINDEPENDENTlayout should...
field = value } } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 属性初始化 属性的初始化尽量在构造方法中完成 无法在构造方法中初始化,尝试降级为局部变量 var 用 lateinit 延迟初始化,val 用 lazy 可空类型谨慎用 null 直接初始化
import com.github.avrokotlin.avro4k.AvroDefault @Serializable data class MyData( @AvroDefault("default value") val stringField: String, @AvroDefault("42") val intField: Int?, @AvroDefault("""{"stringField":"custom value"}""") val nestedType: MyData? = null ) Note This impacts only ...
You can retrieve stored values via thegetXXX()methods or their operator shortcuts. If a key is not present, then the supplied default will be returned instead. vala:Int= settings.getInt("key")valb:Int= settings.getInt("key", defaultValue = -1)valc:Int= settings["key", -1] ...