figured out the recursion based uplc terms to get item from a list

examples/sample/src/scripts/swap.ak

@@ -9,11 +9,10 @@ pub type Redeemer {
 
 
 pub fn spend(datum: sample.Datum, rdmr: Redeemer, ctx: spend.ScriptContext) -> Bool {
-  let dat = sample.Datum{..}
+
   let y = 2
   let x = 1
   let a = datum.something
-  let e = dat.something
   let b = 2
   b == 1
 }