2017-09-18 12:47:33 +02:00
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2017-02-20 04:50:31 +01:00
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#![allow(unused, needless_pass_by_value)]
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2015-12-22 00:35:56 +01:00
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2017-05-17 14:19:44 +02:00
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#![warn(map_entry)]
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2015-12-22 00:35:56 +01:00
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2016-01-12 20:23:28 +01:00
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use std::collections::{BTreeMap, HashMap};
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2015-12-22 00:35:56 +01:00
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use std::hash::Hash;
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2016-01-03 17:19:49 +01:00
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fn foo() {}
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fn insert_if_absent0<K: Eq + Hash, V>(m: &mut HashMap<K, V>, k: K, v: V) {
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if !m.contains_key(&k) { m.insert(k, v); }
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}
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fn insert_if_absent1<K: Eq + Hash, V>(m: &mut HashMap<K, V>, k: K, v: V) {
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if !m.contains_key(&k) { foo(); m.insert(k, v); }
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2015-12-22 00:35:56 +01:00
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}
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fn insert_if_absent2<K: Eq + Hash, V>(m: &mut HashMap<K, V>, k: K, v: V) {
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2016-01-03 17:19:49 +01:00
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if !m.contains_key(&k) { m.insert(k, v) } else { None };
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2016-02-18 20:19:16 +01:00
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}
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fn insert_if_present2<K: Eq + Hash, V>(m: &mut HashMap<K, V>, k: K, v: V) {
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if m.contains_key(&k) { None } else { m.insert(k, v) };
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2016-01-03 17:19:49 +01:00
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}
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fn insert_if_absent3<K: Eq + Hash, V>(m: &mut HashMap<K, V>, k: K, v: V) {
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if !m.contains_key(&k) { foo(); m.insert(k, v) } else { None };
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2016-02-18 20:19:16 +01:00
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}
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fn insert_if_present3<K: Eq + Hash, V>(m: &mut HashMap<K, V>, k: K, v: V) {
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if m.contains_key(&k) { None } else { foo(); m.insert(k, v) };
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2015-12-22 00:35:56 +01:00
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}
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2016-01-12 20:23:28 +01:00
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fn insert_in_btreemap<K: Ord, V>(m: &mut BTreeMap<K, V>, k: K, v: V) {
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if !m.contains_key(&k) { foo(); m.insert(k, v) } else { None };
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}
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2015-12-22 00:35:56 +01:00
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fn insert_other_if_absent<K: Eq + Hash, V>(m: &mut HashMap<K, V>, k: K, o: K, v: V) {
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2016-01-03 16:31:28 +01:00
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if !m.contains_key(&k) { m.insert(o, v); }
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2015-12-22 00:35:56 +01:00
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}
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fn main() {
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}
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