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More idiomatic implementations

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This commit is contained in:
Tomasz Drwięga 2016-03-01 00:00:52 +01:00
parent 2f3b0c9d1c
commit ed6a35f618
1 changed files with 2 additions and 8 deletions
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10
util/src/table.rs
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@ -47,7 +47,7 @@ impl<Row, Col, Val> Table<Row, Col, Val>
/// Returns length of the Table (number of (row, col, val) tuples)
pub fn len(&self) -> usize {
self.map.iter().fold(0, |acc, (_k, v)| acc + v.len())
self.map.values().fold(0, |acc, v| acc + v.len())
}
/// Check if there is any element in this Table
@ -111,13 +111,7 @@ impl<Row, Col, Val> Table<Row, Col, Val>
///
/// Returns previous value (if any)
pub fn insert(&mut self, row: Row, col: Col, val: Val) -> Option<Val> {
if !self.map.contains_key(&row) {
let m = HashMap::new();
self.map.insert(row.clone(), m);
}
let mut columns = self.map.get_mut(&row).unwrap();
columns.insert(col, val)
self.map.entry(row).or_insert_with(|| HashMap::new()).insert(col, val)
}
}