Module arrow::compute::kernels::filter [−][src]
Expand description
Defines miscellaneous array kernels.
Structs
An iterator of (usize, usize)
each representing an interval [start,end[
whose
slots of a BooleanArray are true. Each interval corresponds to a contiguous region of memory to be
“taken” from an array to be filtered.
Functions
Returns a prepared function optimized to filter multiple arrays.
Creating this function requires time, but using it is faster than filter when the
same filter needs to be applied to multiple arrays (e.g. a multi-column RecordBatch
).
WARNING: the nulls of filter
are ignored and the value on its slot is considered.
Therefore, it is considered undefined behavior to pass filter
with null values.
Filters an Array, returning elements matching the filter (i.e. where the values are true).
Returns a new RecordBatch with arrays containing only values matching the filter.
Remove null values by do a bitmask AND operation with null bits and the boolean bits.
Type Definitions
Function that can filter arbitrary arrays