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AK: Add HashMap::remove_all_matching(predicate)

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This removes all matching entries from a hash map in a single pass.
This commit is contained in:
Andreas Kling 2022-01-05 16:53:24 +01:00
parent e08d325124
commit 376e5ef912
2 changed files with 37 additions and 2 deletions
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24
Tests/AK/TestHashMap.cpp
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@ -71,6 +71,30 @@ TEST_CASE(map_remove)
EXPECT(number_to_string.find(2) != number_to_string.end());
}
TEST_CASE(remove_all_matching)
{
HashMap<int, String> map;
map.set(1, "One");
map.set(2, "Two");
map.set(3, "Three");
map.set(4, "Four");
EXPECT_EQ(map.size(), 4u);
map.remove_all_matching([&](int key, String const& value) {
return key == 1 || value == "Two";
});
EXPECT_EQ(map.size(), 2u);
EXPECT(map.contains(3));
EXPECT(map.contains(4));
map.remove_all_matching([&](int, String const&) { return true; });
EXPECT(map.is_empty());
}
TEST_CASE(case_insensitive)
{
HashMap<String, int, CaseInsensitiveStringTraits> casemap;