9fe0d28107
Reason: avoid unnecessary case-analysis explosion It is also unnecessary since we only refine the `below` and `F` arguments over `match`-expressions. This fixes the last case at issue #998 ``` attribute [simp] BinaryHeap.heapifyDown ``` closes #998
29 lines
470 B
Text
29 lines
470 B
Text
import Lean
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open Lean
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open Lean.Meta
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def tst (declName : Name) : MetaM Unit := do
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IO.println (← getUnfoldEqnFor? declName)
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def g (i j : Nat) : Nat :=
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if i < 5 then 0 else
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match j with
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| Nat.zero => 1
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| Nat.succ j => g i j
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#eval tst ``g
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#check g._eq_1
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#check g._eq_2
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#check g._unfold
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def h (i j : Nat) : Nat :=
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let z :=
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match j with
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| Nat.zero => 1
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| Nat.succ j => h i j
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z + z
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#eval tst ``h
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#check h._eq_1
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#check h._eq_2
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#check h._unfold
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