23 lines
508 B
Text
23 lines
508 B
Text
import Lean.Expr
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new_frontend
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open Lean
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def tst : IO Unit :=
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do
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let f := mkConst `f;
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let x := mkBVar 0;
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let y := mkBVar 1;
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let t := mkApp (mkApp (mkApp f x) y) x;
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let a := mkConst `a;
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let b := mkApp f (mkConst `b);
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let c := mkConst `c;
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IO.println t;
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IO.println (t.instantiate #[a, b]);
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IO.println (t.instantiateRange 0 2 #[a, b]);
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IO.println (t.instantiateRange 2 4 #[c, c, a, b, c]);
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IO.println (t.instantiateRev #[a, b]);
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IO.println (t.instantiate #[a]);
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IO.println (t.instantiate1 a);
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pure ()
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#eval tst
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