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4 cze 2009 · While I know that by definition a boolean consists of only two states, true or false. I was wondering what value does a boolean have before it is initialized with one of these states.
24 lis 2008 · It's the most straight-forward. Another way is to use an enumeration. Maybe that's even better and faster, since no boxing is required: public enum ThreeState {. TRUE, FALSE, TRALSE. }; There is the advantage of the first that users of your class doesn't need to care about your three-state boolean.
What is the best datatype to store a three-state variable? Something capable or representing Positive, Neutral, and Negative. Example: Integers -1, 0, 1. Pro: Very concise. Pro: Potentially efficient, Could be stored as a single 2-bit signed integer. Pro: could be used as a scale, such as a floating point multiplier.
5 maj 2014 · The main difference between a java iterator and ‘traditional’ iterator is: the traditional iterator as in stl is ‘on’ the element, in java ‘in between’. A resultset is also ‘on’ a db line not in between. Optional.empty() is my third state.
15 lip 2019 · The State pattern is a good one. It sorts out the state-specific behavior, making it easier to read and maintain than having a long conditional statement in each method. It’s also easier to add new states. Finally, it makes the state transitions explicit inside the Context class and the States—and they can be completely invisible to the ...
7 maj 2014 · This boolean has three states: * <ul> * <li>null: it's not known whether there * is a next row</li> * <li>true: there is a next row, and it * has been pre-fetched</li> * <li>false: there aren't any next rows</li> * </ul> */ Boolean hasNext; ResultSet rs; ResultSetIterator( Supplier<? extends ResultSet> supplier, Function<ResultSet, T ...
4 sie 2022 · State Design Pattern. If we have to change the behavior of an object based on its state, we can have a state variable in the Object. Then use if-else condition block to perform different actions based on the state.
