Array equality for &dyn Array (#3880) #3899
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tustvold
commented
Mar 21, 2023
| @@ -425,13 +425,13 @@ pub trait ArrayAccessor: Array { | |||
| unsafe fn value_unchecked(&self, index: usize) -> Self::Item; | |||
| } | |||
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| impl PartialEq for dyn Array { | |||
| impl PartialEq for dyn Array + '_ { | |||
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This is the major "fix", previously this had an implicit 'static lifetime for dyn Array, which would then result in incredibly opaque compilation errors if you actually tried to use this
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I don't even understand what this means -- "any lifeime"?
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It's documented here - https://doc.rust-lang.org/reference/lifetime-elision.html#default-trait-object-lifetimes
I was aware it applied to things like Box<dyn Foo> but hadn't occurred to me that dyn Foo on its own also has an implicit 'static
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alamb
approved these changes
Mar 22, 2023
| @@ -425,13 +425,13 @@ pub trait ArrayAccessor: Array { | |||
| unsafe fn value_unchecked(&self, index: usize) -> Self::Item; | |||
| } | |||
|
|
|||
| impl PartialEq for dyn Array { | |||
| impl PartialEq for dyn Array + '_ { | |||
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I don't even understand what this means -- "any lifeime"?
| let b = NullArray::new(12); | ||
| let b = b.data(); | ||
| test_equal(a, b, true); | ||
| test_equal(&a, &b, true); |
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Which issue does this PR close?
Part of #3880
Rationale for this change
This is part of being able to move away from
Array::dataWhat changes are included in this PR?
Are there any user-facing changes?