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Rewrite elected_edges.sort_unstable_by in phragmen (#4195)

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* Rewrite phragmen elected_edges.sort_unstable_by

* map -> and_then
This commit is contained in:
Ashley
2019-11-25 11:43:26 +01:00
committed by Bastian Köcher
parent 04571d958b
commit 78a758bfba
1 changed files with 3 additions and 10 deletions
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substrate/primitives/phragmen/src/mock.rs
+3 -10
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@@ -274,17 +274,10 @@ pub(crate) fn do_equalize_float<A>(
e.1 = 0.0; e.1 = 0.0;
}); });
// todo: rewrite.
elected_edges.sort_unstable_by(|x, y| elected_edges.sort_unstable_by(|x, y|
if let Some(x) = support_map.get(&x.0) { support_map.get(&x.0)
if let Some(y) = support_map.get(&y.0) { .and_then(|x| support_map.get(&y.0).and_then(|y| x.total.partial_cmp(&y.total)))
x.total.partial_cmp(&y.total).unwrap_or(rstd::cmp::Ordering::Equal) .unwrap_or(rstd::cmp::Ordering::Equal)
} else {
rstd::cmp::Ordering::Equal
}
} else {
rstd::cmp::Ordering::Equal
}
); );
let mut cumulative_stake = 0.0; let mut cumulative_stake = 0.0;