27 lines
500 B
Text
27 lines
500 B
Text
open tactic
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definition tst1 (a : nat) : a = a :=
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by do
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define "x" (expr.const "nat" []),
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trace_state,
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a ← get_local "a",
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exact a,
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x ← get_local "x",
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mk_app `eq.refl [x] >>= exact
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print tst1
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definition tst2 (a : nat) : a = a :=
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by do
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define "x" (expr.const "nat" []),
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a ← get_local "a",
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exact a,
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trace "------------",
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trace_state,
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get_local "x" >>= revert,
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intro "y",
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trace_state,
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y ← get_local "y",
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mk_app `eq.refl [y] >>= exact
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print tst2
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