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std::find_if(m.begin(), m.end(), [v](const auto& mo) {return mo.second == v; }) != m.end();c++ 14
A lambda expression is used because built-in functions would search by key, not by value.
A lambda expression is used because built-in functions would search by key, not by value.
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
}This generic function works for any type parameters K, V that are comparable
func containsValue(m map[K]T, v T) bool {
for _, x := range m {
if x == v {
return true
}
}
return false
}You have to iterate explicitly. In this implementation, the types K, T are not generic.
elem v (elems m)
Object.values(m).includes(v)JavaScript objects are hashmaps.
Object.values() converts a hashmap to a list of values.
Array#includes then checks whether v is included.
Object.values() converts a hashmap to a list of values.
Array#includes then checks whether v is included.
[...m.values()].includes(v)Unlike the previous implementation, this works for Map objects rather than normal Objects.
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]
breakm.valuesIterator.contains(v)m includes: v.