In Scala, to check if a value is null, true or false, you can use the following methods:
1. isNull: This method is used to check if a given value is null.
Example:
val value: String = null
if (value == null) {
println("Value is null")
} else {
println("Value is not null")
}
The output will be "Value is null".
2. isTrue: This method is used to check if a given Boolean value is true.
Example:
val result: Boolean = true
if (result.isTrue) {
println("Result is true")
} else {
println("Result is false")
}
The output will be "Result is true".
3. isFalse: This method is used to check if a given Boolean value is false.
Example:
val result: Boolean = false
if (result.isFalse) {
println("Result is false")
} else {
println("Result is true")
}
The output will be "Result is false".