12 lines
273 B
Text
12 lines
273 B
Text
module
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import Std.Data.HashMap
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reset_grind_attrs%
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open Std
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attribute [grind →] List.length_pos_of_mem
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attribute [grind] HashMap.size_insert
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set_option trace.grind.issues true in
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example (m : HashMap Nat Nat) : ((m.insert 1 2).insert 3 4).size ≥ m.size := by
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grind
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