#![warn(clippy::map_entry)] | |
#![allow(dead_code)] | |
use std::collections::BTreeMap; | |
fn foo() {} | |
fn btree_map<K: Eq + Ord + Copy, V: Copy>(m: &mut BTreeMap<K, V>, k: K, v: V) { | |
// insert then do something, use if let | |
if !m.contains_key(&k) { | |
m.insert(k, v); | |
foo(); | |
} | |
} | |
fn main() {} |