polars_utils::idx_mapper

Struct IdxMapper

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pub struct IdxMapper { /* private fields */ }
Expand description

Reverses indexing direction

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impl IdxMapper

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pub fn new(total_len: usize, reverse: bool) -> Self

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impl IdxMapper

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pub fn map_range(&self, range: Range<usize>) -> Range<usize>

§Panics

range.end <= self.total_len

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