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Optimize HashSet.UnionWith to copy data from another HashSet when empty #122952

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Merged
stephentoub merged 4 commits into from
Jan 12, 2026

Refactor UnionWith test to use MemberData with foreach loops

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Merged

Optimize HashSet.UnionWith to copy data from another HashSet when empty #122952

Refactor UnionWith test to use MemberData with foreach loops
78138af
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Azure Pipelines / runtime (Build linux-loongarch64 Debug CoreCLR_Bootstrapped) succeeded Jan 7, 2026 in 46m 32s

Build linux-loongarch64 Debug CoreCLR_Bootstrapped succeeded

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