--- a/doc-src/IsarAdvanced/Codegen/Thy/examples/pick1.ML Tue Mar 03 17:05:18 2009 +0100
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,44 +0,0 @@
-structure HOL =
-struct
-
-fun leta s f = f s;
-
-end; (*struct HOL*)
-
-structure Nat =
-struct
-
-datatype nat = Suc of nat | Zero_nat;
-
-fun less_nat m (Suc n) = less_eq_nat m n
- | less_nat n Zero_nat = false
-and less_eq_nat (Suc m) n = less_nat m n
- | less_eq_nat Zero_nat n = true;
-
-fun minus_nat (Suc m) (Suc n) = minus_nat m n
- | minus_nat Zero_nat n = Zero_nat
- | minus_nat m Zero_nat = m;
-
-end; (*struct Nat*)
-
-structure Product_Type =
-struct
-
-fun split f (a, b) = f a b;
-
-end; (*struct Product_Type*)
-
-structure Codegen =
-struct
-
-fun pick ((k, v) :: xs) n =
- (if Nat.less_nat n k then v else pick xs (Nat.minus_nat n k))
- | pick (x :: xs) n =
- let
- val a = x;
- val (k, v) = a;
- in
- (if Nat.less_nat n k then v else pick xs (Nat.minus_nat n k))
- end;
-
-end; (*struct Codegen*)