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TwoFX merged 1 commit into from
Mar 24, 2026
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29 #292

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11 changes: 8 additions & 3 deletions HumanEvalLean/HumanEval29.lean
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Original file line number Diff line number Diff line change
@@ -1,7 +1,12 @@
module

def filter_by_prefix : Unit :=
()
def filterByPrefix (l : List String) (pref : String) : List String :=
l.filter (·.startsWith pref)

open Classical in
theorem filterByPrefix_eq {l : List String} {pref : String} :
filterByPrefix l pref = l.filter (fun s => pref.toList <+: s.toList) := by
simp [filterByPrefix, ← String.startsWith_string_iff]

/-!
## Prompt
Expand Down Expand Up @@ -40,4 +45,4 @@ def check(candidate):
assert candidate([], 'john') == []
assert candidate(['xxx', 'asd', 'xxy', 'john doe', 'xxxAAA', 'xxx'], 'xxx') == ['xxx', 'xxxAAA', 'xxx']
```
-/
-/
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