churf/sample-programs/basic-5

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id : Int -> Int;
id x = x;
add : Int -> Int -> Int;
add x y = x + y;
double : Int -> Int;
double n = n + n;
apply : (Int -> Int -> Int) -> Int -> Int -> Int;
apply f x = \y:Int. f x y;
main : Int;
main = apply add ((\x:Int. x + 1) 1) (double (id 3));