annotate tests/impl.lac @ 211:e86411f647c6
Initial type class support
| author |
Adam Chlipala <adamc@hcoop.net> |
| date |
Sat, 16 Aug 2008 14:32:18 -0400 |
| parents |
9a578171de9e |
| children |
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| rev |
line source |
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adamc@15
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1 val id = fn t :: Type => fn x : t => x
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adamc@15
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2 val id_self = id [t :: Type -> t -> t] id
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adamc@15
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3
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adamc@15
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4 val idi = fn t ::: Type => fn x : t => x
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adamc@15
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5 val idi_self = idi idi
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adamc@17
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6
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adamc@17
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7 val picker = fn na :: Name => fn a ::: Type => fn nb :: Name => fn b ::: Type => fn fs ::: {Type} =>
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adamc@17
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8 fn r : $([na = a, nb = b] ++ fs) => {na = r.na, nb = r.nb}
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adamc@17
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9 val getem = picker [#A] [#C] {A = 0, B = 1.0, C = "hi", D = {}}
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adamc@18
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10 val getem2 = picker [#A] [_] {A = 0, B = 1.0, C = "hi", D = {}}
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adamc@18
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11 val getem3 = picker [#A] [_::Name] {A = 0, B = 1.0, C = "hi", D = {}}
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adamc@17
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12
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adamc@17
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13 val picker_ohmy = fn na ::: Name => fn a ::: Type => fn nb ::: Name => fn b ::: Type => fn fs ::: {Type} =>
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adamc@17
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14 fn r : $([na = a, nb = b] ++ fs) => {na = r.na, nb = r.nb}
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adamc@17
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15 val getem_ohmy = picker_ohmy {A = 0, B = 1.0, C = "hi", D = {}}
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