bc23383194
even when rewriting the type of `h` becuase there is no expected type. (When there is an expected type, it already tried both orientations.) Also feeble attempt to include this information in the docstring without writing half a manual chapter.
42 lines
1.3 KiB
Text
42 lines
1.3 KiB
Text
ex1 (heq : foo = bar) (P : Nat → Prop) (h : P foo) : P bar
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substFails.lean:6:67-6:74: error: invalid `▸` notation, expected result type of cast is
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P 4
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however, the equality
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heq
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of type
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foo = bar
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does not contain the expected result type on either the left or the right hand side
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substFails.lean:8:67-8:74: error: invalid `▸` notation, the equality
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heq
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has type
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foo = bar
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but neither side of the equality is mentioned in the type
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P 3
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substFails.lean:9:67-9:74: error: invalid `▸` notation, expected result type of cast is
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P 4
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however, the equality
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heq
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of type
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foo = bar
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does not contain the expected result type on either the left or the right hand side
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ex7 (heq : bar = foo) (P : Nat → Prop) (h : P foo) : P bar
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substFails.lean:14:67-14:74: error: invalid `▸` notation, expected result type of cast is
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P 4
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however, the equality
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heq
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of type
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bar = foo
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does not contain the expected result type on either the left or the right hand side
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substFails.lean:16:67-16:74: error: invalid `▸` notation, the equality
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heq
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has type
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bar = foo
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but neither side of the equality is mentioned in the type
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P 3
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substFails.lean:17:67-17:74: error: invalid `▸` notation, expected result type of cast is
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P 4
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however, the equality
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heq
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of type
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bar = foo
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does not contain the expected result type on either the left or the right hand side
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