@Override
public Boolean get(Object o) {
if (!(o instanceof String)) return null;
String key = (String) o;
int hashcode = d_keys.number(key);
if (hashcode == -1) return null;
return d_values[hashcode - 1];
}
/** Get the value associated with a key, returning a default value is it is not in the mapping. */
public boolean getOrElse(String key, boolean defaultValue) {
int hash = d_keys.number(key);
if (hash == -1) return defaultValue;
return d_values[hash - 1];
}