fun main() { val strings = arrayOf("A", "B", "C") val acceptAll = true println( strings.filter { if (acceptAll) { true // "The expression is unused" } // Other filters false } ) } Run Code Online (Sandbox Code Playgroud) 但是,trueIntelliJ 会突出显示该行并显示消息“表达式...
The expression is unused(表达式未使用) fun test(status: Int) { when(status) { 1 -> "First" 2 -> "Second" else -> "Else" } } 移除不用的表达式 使用Suppress压制警告 UNUSED_VALUE && ASSIGNED_BUT_NEVER_ACCESSED_VARIABLE (未使用的值,赋值后未使用的变量) fun testUnusedValue() { // The...
fun unusedVariable() { @Suppress("UNUSED_VARIABLE") val currentTimeStamp = System.currentTimeMillis() println("unusedVariable") } 1. 2. 3. 4. 移除变量 使用@Suppress压制警告 The expression is unused(表达式未使用) fun test(status: Int) { when(status) { 1 -> "First" 2 -> "Second" e...
使用@Suppress("UNUSED_ANONYMOUS_PARAMETER")压制警告 Variable ‘currentTimeStamp’ is never used(变量未使用) 1234 fununusedVariable(){@Suppress("UNUSED_VARIABLE")valcurrentTimeStamp=System.currentTimeMillis()println("unusedVariable")} 移除变量 使用@Suppress压制警告 The expression is unused(表达式未使用)...
launch { // 会有警告信息 // The expression is unused "value" } val globalScopeAsyncJob: Deferred<String> = GlobalScope.async { "globalScopeAsyncJob resutn value" } val globalScopeAsyncJob2: Deferred<Unit> = GlobalScope.async { } // 输出 globalScopeLaunchJob === kotlin.Unit println("...
A static expression is evaluated once, and the expr cannot capture variable on function stack. static expr can be used for collection literalsfoo(static { listOf(1, 2, 3)}) Or static local valval somethingStatic = static { expr }
KT-70548 SLC: text of class object access expression is not the same as raw text KT-70572 SLC: missing isInheritor implementation for type parameter KT-70491 SLC: inconsistent source PSI of no-arg constructor for all default values [KT-70458](https://youtrack.jetbrains.co... Read more ...
It is possible to wait until it completes by calling Job.join(). Deferred is a generic type that extends Job. An async call can return a Deferred<Int> or a Deferred<CustomType>, depending on what the lambda returns (the last expression inside the lambda is the result)....
In the program, we bind a lambda expression to a value; full type declarations are provided. val square: (Int) -> Int = { e: Int -> e * e } Thesquarevalue is bound to a lambda expression, which accepts one integer and returns an integer. ...
提示:在IDE里面,lint会提示,Unused return value of a function with lambda expression body. 答案:C 要执行这个lambda,需要使用hello,或者使用hello.invoke 这让我想到了Flutter中的一个骚操作:immediately invoked function expression (IIFE),即{} Indent trimming ...