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Move the fst_stream_into_hashset method in the helper methods

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Clément Renault 2022-01-19 14:30:03 +01:00 • committed by Kerollmops
parent c90fa95f93
commit 5404bc02dd
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3 changed files with 24 additions and 21 deletions
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16
milli/src/update/index_documents/helpers/mod.rs
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@ -2,9 +2,11 @@ mod clonable_mmap;
mod grenad_helpers;
mod merge_functions;
use std::collections::HashSet;
use std::convert::{TryFrom, TryInto};
pub use clonable_mmap::{ClonableMmap, CursorClonableMmap};
use fst::{IntoStreamer, Streamer};
pub use grenad_helpers::{
create_sorter, create_writer, grenad_obkv_into_chunks, into_clonable_grenad, merge_readers,
sorter_into_lmdb_database, sorter_into_reader, write_into_lmdb_database, writer_into_reader,
@ -43,3 +45,17 @@ where
pub fn read_u32_ne_bytes(bytes: &[u8]) -> impl Iterator<Item = u32> + '_ {
bytes.chunks_exact(4).flat_map(TryInto::try_into).map(u32::from_ne_bytes)
}
/// Converts an fst Stream into an HashSet.
pub fn fst_stream_into_hashset<'f, I, S>(stream: I) -> HashSet<Vec<u8>>
where
I: for<'a> IntoStreamer<'a, Into = S, Item = &'a [u8]>,
S: 'f + for<'a> Streamer<'a, Item = &'a [u8]>,
{
let mut hashset = HashSet::new();
let mut stream = stream.into_stream();
while let Some(value) = stream.next() {
hashset.insert(value.to_owned());
}
hashset
}