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Sort never attempted cards randomly

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user1823 2025-10-16 19:04:25 +05:30
parent e97a3a15a7
commit fd4e8457d8
1 changed files with 11 additions and 3 deletions
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14
rslib/src/scheduler/queue/builder/mod.rs
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@ -9,7 +9,9 @@ mod sorting;
use std::collections::HashMap; use std::collections::HashMap;
use std::collections::VecDeque; use std::collections::VecDeque;
use std::hash::Hasher;
use fnv::FnvHasher;
use intersperser::Intersperser; use intersperser::Intersperser;
use sized_chain::SizedChain; use sized_chain::SizedChain;
@ -278,13 +280,19 @@ fn merge_new(
fn sort_learning(learning: Vec<DueCard>) -> VecDeque<LearningQueueEntry> { fn sort_learning(learning: Vec<DueCard>) -> VecDeque<LearningQueueEntry> {
// Prioritize intraday learning cards that were previously attempted // Prioritize intraday learning cards that were previously attempted
// (reps > 0) before never-attempted cards (reps == 0). Preserve due-time // (reps > 0) before never-attempted cards (reps == 0). Sort previously
// ordering within each group. // attempted cards by due-time and never-attempted cards deterministically
// by an FNV hash of their id.
let (mut previously_attempted, mut never_attempted): (Vec<DueCard>, Vec<DueCard>) = let (mut previously_attempted, mut never_attempted): (Vec<DueCard>, Vec<DueCard>) =
learning.into_iter().partition(|c| c.reps > 0); learning.into_iter().partition(|c| c.reps > 0);
previously_attempted.sort_unstable_by(|a, b| a.due.cmp(&b.due)); previously_attempted.sort_unstable_by(|a, b| a.due.cmp(&b.due));
never_attempted.sort_unstable_by(|a, b| a.due.cmp(&b.due));
never_attempted.sort_unstable_by_key(|c| {
let mut hasher = FnvHasher::default();
hasher.write_i64(c.id.0);
hasher.finish()
});
previously_attempted previously_attempted
.into_iter() .into_iter()