Collection expressions: inferred element type #8582
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CyrusNajmabadi
approved these changes
Nov 12, 2024
kasperk81
reviewed
Dec 1, 2024
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| ```csharp | ||
| foreach (bool? b in [false, true, null]) { } // target type: col<bool?>? | ||
| foreach (byte b in [1, 2, 3]) { } // target type: col<byte>? |
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// target type: col?
would a plain array of target type work? the existing workaround is foreach (byte b in (byte[])[1,2,3]) { } sharplab shows array is less baggy
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A ReadOnlySpan<T> is way better (even a Span<T> is better)
sharplab.io
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Working group notes for inferring collection expression element type from best common type of the elements, and potentially choose containing collection type.
Added to meetings/working-group/collection-literals.
Branched from, and replaces, #7864.