a826de8a3d
I'd previously added an instance from `ForIn'` to `ForIn`, but this then caused some non-defeq duplication. It seems fine to just remove the concrete `ForIn` instances in cases where the `ForIn'` instance exists too. We can even remove a number of type-specific lemmas in favour of the general ones.
23 lines
557 B
Text
23 lines
557 B
Text
#check_simp #[1,2,3,4,5][2] ~> 3
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#check_simp #[1,2,3,4,5][2]? ~> some 3
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#check_simp #[1,2,3,4,5][7]? ~> none
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#check_simp #[][0]? ~> none
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#check_simp #[1,2,3,4,5][2]! ~> 3
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#check_simp #[1,2,3,4,5][7]! ~> (default : Nat)
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#check_simp (#[] : Array Nat)[0]! ~> (default : Nat)
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attribute [local simp] Id.run in
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#check_simp
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(Id.run do
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let mut s := 0
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for i in #[1,2,3,4] do
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s := s + i
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pure s) ~> 10
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attribute [local simp] Id.run in
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#check_simp
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(Id.run do
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let mut s := 0
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for h : i in #[1,2,3,4] do
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s := s + i
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pure s) ~> 10
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