/**
* Returns a {@code char} matcher functionally equivalent to this one, but which may be faster to
* query than the original; your mileage may vary. Precomputation takes time and is likely to be
* worthwhile only if the precomputed matcher is queried many thousands of times.
*
* <p>This method has no effect (returns {@code this}) when called in GWT: it's unclear whether a
* precomputed matcher is faster, but it certainly consumes more memory, which doesn't seem like a
* worthwhile tradeoff in a browser.
*/
public CharMatcher precomputed() {
return Platform.precomputeCharMatcher(this);
}
/**
* Returns an optional enum constant for the given type, using {@link Enum#valueOf}. If the
* constant does not exist, {@link Optional#absent} is returned. A common use case is for parsing
* user input or falling back to a default enum constant. For example, {@code
* Enums.getIfPresent(Country.class, countryInput).or(Country.DEFAULT);}
*
* @since 12.0
*/
public static <T extends Enum<T>> Optional<T> getIfPresent(Class<T> enumClass, String value) {
checkNotNull(enumClass);
checkNotNull(value);
return Platform.getEnumIfPresent(enumClass, value);
}