Consider the following Scala function definitions: def f [X, Y] (a:Option[X], g:X=>Y) : Option[Y] = { a match { case None => None case Some (x) => Some (g (x)) } } def index [X] (xs:List[X], n:Int) : Option[X] = { xs match { case Nil => None case y::ys if (n == 0) => Some (y) case _::ys => index (ys, n - 1) } } What is the output of running: f (index (List (10, 11, 12), 5), (n:Int) => n * 2)

Which operating system is a version of linux?

What are some settings you can control when formatting columns?

Write a new lc-3 trap subroutine (i.e. a subroutine that will be invoked via the trap instruction) that will receive a numeric digit entered at the keyboard (i.e. an ascii character), echo it to the screen, and return in r0 the corresponding numeric value: so if the user types the digit '7', the character '7' will appear on the screen, but the value returned in r0 will be b0000 0000 0000 0111 (#7) you may not use any trap calls in your code - you must implement the "polling" code that interrogates the keyboard status and data registers. ; getnum_tsr ; a subroutine for obtaining a numeric value ; given ascii numeric digit input to keyboard. ; the numeric digit is echoed to the console (e.g. '7' = b0000 0000 0011 0111), ; but the value returned in r0 is the actual numeric value ; corresponding to the digit (e.g. b0000 0000 0000 0111 =