dotnet/roslyn
GitHub で見るGeneralize `(CollectionBuilderType<T>)[..readOnlySpan]` optimization to spread operands which are implicitly convertible to `ReadOnlySpan<T>`
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#73,110 opened on 2024年4月19日
Area-CompilersCode Gen QualityFeature - Collection Expressionshelp wanted
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説明
I would welcome a follow-up PR which also handles cases where the spread operand is implicitly convertible to
ReadOnlySpan<T>.
Originally posted by @RikkiGibson in https://github.com/dotnet/roslyn/issues/73102#issuecomment-2067272169
Affected scenarios would include:
Span<int> span = ..;
MyCollectionBuilderType<T> collection = [..span];
// currently:
MyCollectionBuilderType<T> collection = MyCollectionBuilderType.Create((ReadOnlySpan<T>)span.ToArray());
// could change to:
MyCollectionBuilderType<T> collection = MyCollectionBuilderType.Create((ReadOnlySpan<T>)span);