(* Programming Languages (F28PL) lecture transcript - 13th September at 11:15 *)

(* Entering text between double quotes will automatically be recognised as a string *)
"Make sure you can use PuTTy to remote ssh into jove";

(* We can print the variable 'it'. In this case it would be the string we entered previously *)
it;

(* Let's calculate 5 + 5 *)
5+5;

(* ints can be larger than 64-bit in poly - arbitrary precision *)
100000000000000000000000000000;

(* We can see the type of the + operator function *)
op +;

(* We can concatenate strings by using the ^ operator *)
"Hello"^" "^"world";

(* We can use op when we want to run operators with function syntax *)
(op +) (5,6);
(* This is the 'syntactic sugar' version of the function above. *)
5+6;

(* We create a function which inputs x, and outputs the result of x+x *)
fun selfadd x = x+x;

(* A function that runs the input x into function f, and output of that into function f *)
fun selfcompose f x = f(f(x));