tuple – Robin on Linux

Use type of “Any” carefully in Scala

Robin Dong 2016-04-22 No Comments

Think about the code below:

object My extends App {
        def increment(key: Any) {
                println(key);
        }

        increment("hello");
        increment("world", 6, 7);
}

object My extends App {

def increment(key: Any) {

println(key);

}

increment("hello");

increment("world", 6, 7);

}

I intent to see the compiler error for second ‘increment’ int the first place. But it don’t, the compiler report ok and the output of the program is:

hello
(world,6,7)

1 2	hello (world,6,7)

The compiler recognize the three arguments “world”, “6”, “7” as a tuple of (“world”, 6,… Read more »