16 lines
246 B
Ruby
16 lines
246 B
Ruby
# typed: strict
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class Array
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sig { returns(T.nilable(Elem)) }
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def second; end
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sig { returns(T.nilable(Elem)) }
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def third; end
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sig { returns(T.nilable(Elem)) }
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def fourth; end
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sig { returns(T.nilable(Elem)) }
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def fifth; end
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end
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