kotlin : what is difference between isNullOrEmpty and isNullOrBlank?

Question

I want check value of my EditText in android so I saw two function for my String value :

user.isNullOrBlank()

and

user.isNullOrEmpty()

what is difference between them?

Answer 1

isNullOrBlank() takes whitespace into account:

fun main() {   val thisIsBlank = "   "    println(thisIsBlank.isNullOrEmpty())   println(thisIsBlank.isNullOrBlank()) } 

This prints:

false true 

because thisIsBlank is not empty, but it is blank.