Make allocating field names avoidable for range and exists queries. #2308
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If the field names are statically known, `Cow::Borrowed(&'static str)` can handle them without allocations. The general case is still handled by `Cow::Owned(String)`.
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I don't think a single allocation per query won't have a measurable impact on performance, therefore I'd prefer the more readable variant. |
I tried to anticipate this via the trait bound |
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If the field names are statically known,
Cow::Borrowed(&'static str)can handle them without allocations. The general case is still handled byCow::Owned(String).