object Main extends App {
val s1 = "scala language"
val s2 = "SCALA LANGUAGE"
// case-insensitivity compare
def equal(s: String, t: String): Boolean = s.equalsIgnoreCase(t)
println(equal(s1, s2))
println(s1.equalsIgnoreCase(s2))
}
/*
run:
true
true
*/