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Fixes to support multi-dimensional arrays #27618

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Apr 25, 2022
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@roji roji commented Mar 10, 2022

Fixes #26975

@roji roji requested a review from ajcvickers March 10, 2022 19:39
if (typeof(IStructuralEquatable).IsAssignableFrom(type))
// We exclude multi-dimensional arrays even though they're IStructuralEquatable because of
// https://github.com/dotnet/runtime/issues/66472
if (typeof(IStructuralEquatable).IsAssignableFrom(type) && !(type.IsArray && typeof(T).GetArrayRank() != 1))
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Note: this means that multidimensional arrays are excluded from structural equals checks. Assuming the runtime-side issue is fixed one day, it would be a breaking change to remove this exclusion, so we may be better off not doing this and telling users to set up a value converter explicitly.

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I think this is fine; I think an explicit value comparer is the way to go for this.

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Agree, will remove this specific exception - but will wait a few days before merging to see responses to dotnet/runtime#66472.

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OK, no movement on the runtime side - I'll remove the check for muiltidimensional arrays; this means they will cause an exception by default, and can be handled via an explicit value comparer.

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ghost commented Apr 25, 2022

Hello @roji!

Because this pull request has the auto-merge label, I will be glad to assist with helping to merge this pull request once all check-in policies pass.

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ghost commented Apr 25, 2022

Apologies, while this PR appears ready to be merged, I've been configured to only merge when all checks have explicitly passed. The following integrations have not reported any progress on their checks and are blocking auto-merge:

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@ghost ghost merged commit f60e04c into dotnet:main Apr 25, 2022
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Thank you for your commit.
I've just come accross this behavior in ef core ver.6.0.6.
Could you please merge to "release 6.0 branch".

@roji roji deleted the MultidimensionalArrays branch June 15, 2022 21:29
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Multidimensional array regression from NET 5 > 6 - The type Double[,] does not represent a sequence
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