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doc: swap sides of equality in grind #512

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doc: swap sides of equality in grind #512

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2 changes: 1 addition & 1 deletion Manual/Grind.lean
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Original file line number Diff line number Diff line change
Expand Up @@ -467,7 +467,7 @@ axiom q : Nat → Nat

/-- info: h₁: [q #1] -/
#guard_msgs (info) in
@[grind? →] theorem h₁ (w : 7 = p (q x)) : p (x + 1) = q x := sorry
@[grind? →] theorem h₁ (w : p (q x) = 7) : p (x + 1) = q x := sorry
```

First, to understand the output we need to recall that the `#n` appearing in patterns are arguments of the theorem, numbered as de-Bruijn variables, i.e. in reverse order (so `#0` would be `w : p (q x) = 7`, while `#1` is the implicit argument `x`).
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