funcopyAddress(address:Address): Address {valresult = Address()// there's no 'new' keyword in Kotlinresult.name = address.name// accessors are calledresult.street = address.street// ...returnresult } What is the exact difference betweenvarandval? Why do we need both? This isnot a dup...
[kotlin theme=”darcula” runnable=”false”] // Syntax lateinit var variableName: DataType [/kotlin] Note that ‘lateinit‘ modifier is allowed only on mutable local variables likevar. Hence, you cannot use forvalvariables. 1.2 Using lateinit Variable Let’s create and use thelateinitvariable ...
For our earlier example, val intToLong: Int.() -> Long = { toLong() } , it effectively results in the block of code being evaluated in a different context, as if it was placed in a function inside Int. Here's a different example using handcrafted types that showcases this better:...
Kotlin offers big advantages over Java for JVM and Android development, and plays nicely with Java in the same projects.
Once the val or a collection is initialized, you can be sure about its validity. Null Safety Kotlin’s type system is aimed at eliminating the danger of null references from code, also known as ‘The Billion Dollar Mistake.’ One of the most common pitfalls in many programming languages, ...
For Kotlin Multiplatform, add the dependency below to your module'sbuild.gradle.ktsfile: sourceSets {valcommonMain by getting { dependencies { implementation("com.github.skydoves:whatif:1.2.1") } } } Usage WhatIf fully supports Kotlin Multiplatform, making it versatile for use in pure Kotlin ...
junit.Test class RegistrationUtilTest { @Test fun `empty username returns false`() { val result = RegistrationUtil.isValidRegistrationInput("", "123", "123") assertThat(result).isFalse() } @Test fun `username and correctly repeated password returns true`() { val result = Regi...
Writing coroutinesin Kotlin Let’s pretend we have an orders list that we canfetchusing an API. So the function used to fetch the data can look something like this: funfetchOrders(){ val array = api.fetchOrdersList() updateUI(array) ...
I was reading Michael Ferguson's Atomic Updates on MutableStateFlow post which was saying that there is a difference between setValue and update. Then I checked documentation for value and it was saying; This property is thread-safe and ...
// Member with the name 'hashCode' is reserved for future releases override fun hashCode(): Int { return super.hashCode() } } Comparison Can compare by equals function, but can not by referential equality fun main() { val exampleInline1 = ExampleInline("ABC") ...