NullArrayCache

datafusion_common::scalar::cache

Struct NullArrayCache 

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struct NullArrayCache {
    cache: Option<(usize, ArrayRef)>,
}
Expand description

Cache for null arrays to avoid repeated allocations when the same size is used frequently.

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§cache: Option<(usize, ArrayRef)>

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impl NullArrayCache

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fn get_or_create(&mut self, num_rows: usize) -> ArrayRef

Get or create a cached null array for the given number of rows

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impl Debug for NullArrayCache

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Default for NullArrayCache

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fn default() -> NullArrayCache

Returns the “default value” for a type. Read more

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