The function naming convention

The conventions for naming functions in Kotlin are similar to that of Java. When naming methods, camel case is utilized. In camel case, names are written such that each word in the name begins with a capital letter, with no intervening spaces or punctuation:

//Good function name
fun sayHello() {
 println("Hello")
}

//Bad function name
fun say_hello() {
 println("Hello")
}