18 lines
617 B
Text
18 lines
617 B
Text
list.map : (?M_1 → ?M_2) → list ?M_1 → list ?M_2
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field_access.lean:5:8: error: invalid projection, structure expected
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l
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has type
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list ℕ
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field_access.lean:7:13: error: invalid projection, structure has only 2 field(s)
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(1, 2)
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which has type
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?m_1 × ?m_2
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field_access.lean:10:1: error: invalid field notation, 'mapp' is not a valid "field" because environment does not contain 'list.mapp'
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l
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which has type
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list ℕ
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field_access.lean:13:1: error: invalid field notation, type is not of the form (C ...) where C is a constant
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a
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has type
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A
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field_access.lean:16:0: error: unknown identifier 'eq.sym'
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