func (m *Map) GetKey(key string) NumValue {
	m.mu.RLock()
	defer m.mu.RUnlock()
	return m.m[key]
}
// GetKey returns the given key's value.
// TODO: We should probably add a way to get the list of all the keys in the
// map.
GetKey returns the given key's value.
TODO: We should probably add a way to get the list of all the keys in the
map.
// GetKey returns the given key ' s value . // TODO : We should probably add a way to get the list of all the keys in the // map .
func (m *Map) GetKey(key string) NumValue {
	m.mu.RLock()
	defer m.mu.RUnlock()
	return m.m[key]
}
func ( m * Map ) GetKey ( key string ) NumValue { m . mu . RLock ( ) defer m . mu . RUnlock ( ) return m . m [ key ] }
GetKey returns the given key's value.
GetKey returns the given key ' s value .