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HashMap.getValue()

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This commit is contained in:
Josh Wolfe 2019-06-13 07:26:40 -04:00 committed by Andrew Kelley
parent 8a2c2da805
commit 82ab006e58
1 changed files with 6 additions and 0 deletions
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6
std/hash_map.zig
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@ -204,6 +204,10 @@ pub fn HashMap(comptime K: type, comptime V: type, comptime hash: fn (key: K) u3
return hm.internalGet(key);
}
pub fn getValue(hm: *const Self, key: K) ?V {
return if (hm.get(key)) |kv| kv.value else null;
}
pub fn contains(hm: *const Self, key: K) bool {
return hm.get(key) != null;
}
@ -427,12 +431,14 @@ test "basic hash map usage" {
testing.expect(map.contains(2));
testing.expect(map.get(2).?.value == 22);
testing.expect(map.getValue(2).? == 22);
const rmv1 = map.remove(2);
testing.expect(rmv1.?.key == 2);
testing.expect(rmv1.?.value == 22);
testing.expect(map.remove(2) == null);
testing.expect(map.get(2) == null);
testing.expect(map.getValue(2) == null);
map.removeAssertDiscard(3);
}