Null True False in Kotlin

In Kotlin, we use the == operator to check for null/true/false values.

To check for null, we can simply compare the value to null using the == operator:

val myValue: String? = null
if (myValue == null) {

    // do something if myValue is null

} else {

    // do something if myValue is not null

}

To check for true or false values, we can do the same thing. For example, if we have a Boolean value:

val myBool: Boolean = false
if (myBool == true) {

    // do something if myBool is true

} else {

    // do something if myBool is false

}

Or we can simplify it further like this:

val myBool: Boolean = false
if (myBool) {

    // do something if myBool is true

} else {

    // do something if myBool is false

}

Here, the if (myBool) statement is equivalent to if (myBool == true).