lean4-htt/tests/lean/vm_let_expr.lean

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Text

meta def mk_value (n : nat) : nat :=
trace "mk_value" (λ _, 2 * n)
meta def mk_fn (sz : nat) : nat → nat :=
let n := mk_value sz in
λ x, x + n
vm_eval let f := mk_fn 10 in f 1 + f 2 + f 3 + f 4
vm_eval ((let x := mk_value 10 in mk_fn x) 10)