adamc@329
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1 con idT = fn t :: Type => t
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adamc@329
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2 con record = fn t :: {Type} => $t
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adamc@339
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3 con fstTT = fn t :: (Type * Type) => t.1
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adamc@339
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4 con sndTT = fn t :: (Type * Type) => t.2
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adamc@329
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5
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adamc@325
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6 con mapTT (f :: Type -> Type) = fold (fn nm t acc => [nm] ~ acc =>
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adamc@325
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7 [nm = f t] ++ acc) []
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adamc@325
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8
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adamc@339
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9 con mapT2T (f :: (Type * Type) -> Type) = fold (fn nm t acc => [nm] ~ acc =>
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adamc@339
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10 [nm = f t] ++ acc) []
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adamc@339
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11
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adamc@339
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12 con ex = fn tf :: (Type -> Type) =>
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adamc@339
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13 res ::: Type -> (choice :: Type -> tf choice -> res) -> res
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adamc@339
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14
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adamc@339
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15 fun ex (tf :: (Type -> Type)) (choice :: Type) (body : tf choice) : ex tf =
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adamc@339
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16 fn (res ::: Type) (f : choice :: Type -> tf choice -> res) =>
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adamc@339
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17 f [choice] body
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adamc@339
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18
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adamc@325
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19 fun compose (t1 ::: Type) (t2 ::: Type) (t3 ::: Type) (f1 : t2 -> t3) (f2 : t1 -> t2) (x : t1) = f1 (f2 x)
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adamc@325
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20
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adamc@325
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21 fun txt (t ::: Type) (ctx ::: {Unit}) (use ::: {Type}) (sh : show t) (v : t) = cdata (show sh v)
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adamc@328
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22
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adamc@336
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23 fun foldTR (tf :: Type -> Type) (tr :: {Type} -> Type)
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adamc@336
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24 (f : nm :: Name -> t :: Type -> rest :: {Type} -> [nm] ~ rest
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adamc@345
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25 => tf t -> tr rest -> tr ([nm = t] ++ rest))
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adamc@336
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26 (i : tr []) =
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adamc@336
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27 fold [fn r :: {Type} => $(mapTT tf r) -> tr r]
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adamc@336
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28 (fn (nm :: Name) (t :: Type) (rest :: {Type}) (acc : _ -> tr rest) =>
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adamc@336
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29 [[nm] ~ rest] =>
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adamc@336
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30 fn r => f [nm] [t] [rest] r.nm (acc (r -- nm)))
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adamc@336
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31 (fn _ => i)
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adamc@336
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32
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adamc@339
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33 fun foldT2R (tf :: (Type * Type) -> Type) (tr :: {(Type * Type)} -> Type)
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adamc@339
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34 (f : nm :: Name -> t :: (Type * Type) -> rest :: {(Type * Type)} -> [nm] ~ rest
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adamc@345
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35 => tf t -> tr rest -> tr ([nm = t] ++ rest))
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adamc@339
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36 (i : tr []) =
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adamc@339
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37 fold [fn r :: {(Type * Type)} => $(mapT2T tf r) -> tr r]
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adamc@339
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38 (fn (nm :: Name) (t :: (Type * Type)) (rest :: {(Type * Type)}) (acc : _ -> tr rest) =>
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adamc@339
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39 [[nm] ~ rest] =>
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adamc@339
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40 fn r => f [nm] [t] [rest] r.nm (acc (r -- nm)))
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adamc@339
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41 (fn _ => i)
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adamc@339
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42
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adamc@330
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43 fun foldTR2 (tf1 :: Type -> Type) (tf2 :: Type -> Type) (tr :: {Type} -> Type)
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adamc@328
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44 (f : nm :: Name -> t :: Type -> rest :: {Type} -> [nm] ~ rest
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adamc@345
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45 => tf1 t -> tf2 t -> tr rest -> tr ([nm = t] ++ rest))
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adamc@328
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46 (i : tr []) =
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adamc@328
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47 fold [fn r :: {Type} => $(mapTT tf1 r) -> $(mapTT tf2 r) -> tr r]
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adamc@328
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48 (fn (nm :: Name) (t :: Type) (rest :: {Type}) (acc : _ -> _ -> tr rest) =>
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adamc@328
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49 [[nm] ~ rest] =>
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adamc@328
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50 fn r1 r2 => f [nm] [t] [rest] r1.nm r2.nm (acc (r1 -- nm) (r2 -- nm)))
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adamc@328
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51 (fn _ _ => i)
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adamc@332
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52
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adamc@339
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53 fun foldT2R2 (tf1 :: (Type * Type) -> Type) (tf2 :: (Type * Type) -> Type) (tr :: {(Type * Type)} -> Type)
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adamc@339
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54 (f : nm :: Name -> t :: (Type * Type) -> rest :: {(Type * Type)} -> [nm] ~ rest
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adamc@345
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55 => tf1 t -> tf2 t -> tr rest -> tr ([nm = t] ++ rest))
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adamc@339
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56 (i : tr []) =
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adamc@339
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57 fold [fn r :: {(Type * Type)} => $(mapT2T tf1 r) -> $(mapT2T tf2 r) -> tr r]
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adamc@339
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58 (fn (nm :: Name) (t :: (Type * Type)) (rest :: {(Type * Type)}) (acc : _ -> _ -> tr rest) =>
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adamc@339
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59 [[nm] ~ rest] =>
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adamc@339
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60 fn r1 r2 => f [nm] [t] [rest] r1.nm r2.nm (acc (r1 -- nm) (r2 -- nm)))
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adamc@339
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61 (fn _ _ => i)
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adamc@339
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62
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adamc@336
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63 fun foldTRX (tf :: Type -> Type) (ctx :: {Unit})
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adamc@336
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64 (f : nm :: Name -> t :: Type -> rest :: {Type} -> [nm] ~ rest
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adamc@345
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65 => tf t -> xml ctx [] []) =
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adamc@336
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66 foldTR [tf] [fn _ => xml ctx [] []]
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adamc@336
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67 (fn (nm :: Name) (t :: Type) (rest :: {Type}) =>
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adamc@336
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68 [[nm] ~ rest] =>
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adamc@336
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69 fn r acc => <xml>{f [nm] [t] [rest] r}{acc}</xml>)
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adamc@336
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70 <xml></xml>
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adamc@336
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71
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adamc@339
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72 fun foldT2RX (tf :: (Type * Type) -> Type) (ctx :: {Unit})
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adamc@339
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73 (f : nm :: Name -> t :: (Type * Type) -> rest :: {(Type * Type)} -> [nm] ~ rest
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adamc@345
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74 => tf t -> xml ctx [] []) =
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adamc@339
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75 foldT2R [tf] [fn _ => xml ctx [] []]
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adamc@339
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76 (fn (nm :: Name) (t :: (Type * Type)) (rest :: {(Type * Type)}) =>
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adamc@339
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77 [[nm] ~ rest] =>
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adamc@339
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78 fn r acc => <xml>{f [nm] [t] [rest] r}{acc}</xml>)
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adamc@339
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79 <xml></xml>
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adamc@339
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80
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adamc@332
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81 fun foldTRX2 (tf1 :: Type -> Type) (tf2 :: Type -> Type) (ctx :: {Unit})
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adamc@332
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82 (f : nm :: Name -> t :: Type -> rest :: {Type} -> [nm] ~ rest
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adamc@345
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83 => tf1 t -> tf2 t -> xml ctx [] []) =
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adamc@332
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84 foldTR2 [tf1] [tf2] [fn _ => xml ctx [] []]
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adamc@332
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85 (fn (nm :: Name) (t :: Type) (rest :: {Type}) =>
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adamc@332
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86 [[nm] ~ rest] =>
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adamc@332
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87 fn r1 r2 acc => <xml>{f [nm] [t] [rest] r1 r2}{acc}</xml>)
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adamc@332
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88 <xml></xml>
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adamc@334
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89
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adamc@339
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90 fun foldT2RX2 (tf1 :: (Type * Type) -> Type) (tf2 :: (Type * Type) -> Type) (ctx :: {Unit})
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adamc@339
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91 (f : nm :: Name -> t :: (Type * Type) -> rest :: {(Type * Type)} -> [nm] ~ rest
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adamc@345
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92 => tf1 t -> tf2 t -> xml ctx [] []) =
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adamc@339
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93 foldT2R2 [tf1] [tf2] [fn _ => xml ctx [] []]
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adamc@339
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94 (fn (nm :: Name) (t :: (Type * Type)) (rest :: {(Type * Type)}) =>
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adamc@339
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95 [[nm] ~ rest] =>
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adamc@339
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96 fn r1 r2 acc => <xml>{f [nm] [t] [rest] r1 r2}{acc}</xml>)
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adamc@339
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97 <xml></xml>
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adamc@339
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98
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adamc@334
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99 fun queryX (tables ::: {{Type}}) (exps ::: {Type}) (ctx ::: {Unit}) (q : sql_query tables exps) =
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adamc@334
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100 [tables ~ exps] =>
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adamc@334
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101 fn (f : $(exps ++ fold (fn nm (fields :: {Type}) acc => [nm] ~ acc => [nm = $fields] ++ acc) [] tables)
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adamc@334
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102 -> xml ctx [] []) =>
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adamc@334
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103 query q
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adamc@334
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104 (fn fs acc => return <xml>{acc}{f fs}</xml>)
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adamc@334
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105 <xml></xml>
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adamc@341
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106
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adamc@341
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107 fun oneOrNoRows (tables ::: {{Type}}) (exps ::: {Type}) (q : sql_query tables exps) =
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adamc@341
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108 [tables ~ exps] =>
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adamc@341
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109 query q
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adamc@341
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110 (fn fs _ => return (Some fs))
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adamc@341
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111 None
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