Important disclosure: we're proud affiliates of some tools mentioned in this guide. If the value happens to be null, a NullPointerException will be thrown at runtime. When you use the !! operator on a nullable variable or expression, you are telling the compiler that you are certain that the value is not null at that particular point in the code. In Kotlin, the double exclamation mark ( !!) is called the "not-null assertion operator." It is used to assert that a nullable expression is not null, and it instructs the compiler to consider the expression as non-null.
Keep laughing and enjoy your coding journey!🐱🏍 Why did the Kotlin developer bring a flashlight to work?īecause they heard Kotlin had a lot of "smart casts"!
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