Struct redis_driver::ZRange

pub struct ZRange<'a, T>where
    T: SortedSetCommands + ?Sized,{ /* private fields */ }

Builder for the zrange command

Implementations

impl<'a, T> ZRange<'a, T>where
    T: SortedSetCommands + ?Sized,

pub fn sort_by(self, sort_by: ZRangeSortBy) -> Self

When the ByScore option is provided, the command behaves like ZRANGEBYSCORE and returns the range of elements from the sorted set having scores equal or between start and stop.

When the ByLex option is used, the command behaves like ZRANGEBYLEX and returns the range of elements from the sorted set between the start and stop lexicographical closed range intervals.

pub fn rev(self) -> Self

Using the REV option reverses the sorted set, with index 0 as the element with the highest score.

pub fn limit(self, offset: usize, count: isize) -> Self

The optional LIMIT argument can be used to obtain a sub-range from the matching elements (similar to SELECT LIMIT offset, count in SQL).

A negative count returns all elements from the offset.

Keep in mind that if offset is large, the sorted set needs to be traversed for offset elements before getting to the elements to return, which can add up to O(N) time complexity.

pub fn execute<E>(self) -> Pin<Box<dyn Future<Output = Result<Vec<E>>> + 'a>>where
    E: FromValue,

Return

list of elements in the specified range

pub fn with_scores<E>(
    self
) -> Pin<Box<dyn Future<Output = Result<Vec<(E, f64)>>> + 'a>>where
    E: FromValue,

The optional WITHSCORES argument supplements the command’s reply with the scores of elements returned. The returned list contains value1,score1,…,valueN,scoreN instead of value1,…,valueN.

Return

list of elements and their scores in the specified range