ObjFW  Diff

 * OFInvalidEncodingException if the string contains any non-number characters.
 *
 * \return A double with the value of the string
 */
- (double)doubleValue;

/**
 * Returns the string as an array of of_unichar_t. The result needs to be
 * Returns the string as an array of of_unichar_t.
 * free()'d by the caller, as the memory is not marked as belonging to the
 * object.
 *
 * The result is valid until the autorelease pool is released. If you want to
 * use the result outside the scope of the current autorelease pool, you have to
 * copy it.
 *
 * \return The string as an array of Unicode characters
 */
- (of_unichar_t*)unicodeString;

/**
 * Writes the string into the specified file using UTF-8 encoding.