Check if map contains value, in Scala

m.valuesIterator.contains(v)

(boolean (some #{v} (vals m)))

std::find_if(m.begin(), m.end(), [v](const auto& mo) {return mo.second == v; }) != m.end();

m.ContainsValue(v)

m.byValue.canFind(v);

m.containsValue(v);

Map.values(m) |> Enum.member?(v)

func containsValue[M ~map[K]V, K, V comparable](m M, v V) bool {
	for _, x := range m {
		if x == v {
			return true
		}
	}
	return false
}

func containsValue(m map[K]T, v T) bool {
	for _, x := range m {
		if x == v {
			return true
		}
	}
	return false
}

elem v (elems m)

[...m.values()].includes(v)

Object.values(m).includes(v)

m.containsValue(v)

m.containsValue(v)

in_array($v, $m, true);

m.IndexOfData(v) >= 0

print "Found it!" if exists $m{$v};

v in m.values()

def k(x, m):
    for k, v in m.items():
        if v == x: return k
k = k(v, m)

x = False
for y in m.items():
    if y[1] == v:
        x = y[0]
        break

m.value?(v)

let does_contain = m.values().any(|&val| *val == v);

m includes: v.

Programming-Idioms