blackjack-game | Blackjack card game developed with vanilla JavaScript ES6 | Game Engine library
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kandi X-RAY | blackjack-game Summary
Blackjack card game developed with vanilla JavaScript ES6 - work on progress
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QUESTION
The clean code says, that is not recommended to initialize objects, use if statement or other things in the __constructor. I have a class in which I used elements in the constructor which are not allowed. How to rebuild it to conform to the rules?
I searched on google! But I do not really understand and I hope that I will succeed in understanding with this particular example. The full code is also available on github: https://github.com/KoreLewi/21-blackjack-game
...ANSWER
Answered 2019-Aug-14 at 11:34The pattern is Dependency Injection rather than initialising your dependencies internaly.
One way to "fix" your code is to have a CardDeck
Interface and multiple (or just in this case) a EnglishDeck
class which implements CardDeck
.
And in all the classes which require a card deck you inject it in the constructor like this:
QUESTION
I have the following strange question. Lets say we have a class BlackJackGame and this class contains the BlackJackGame algorithm for electing a winner. Same class though contains the main method for starting the game. This main method in some sense is violating the principle of Single Responsibility for a class. In addition lets say we place one more method for printing the winner in some format. Lets say this method is also static, is this method breaking the responsibility principle any more than the main method. And then what, lets say we say that it is breaking. Does this mean we should create. Now lets presume we also have a utility method that parses the arguments coming from the command line and place it as static method as well.
1 Main class to hold the Main method, 1 Print class to hold the Print method and 1 ArgumentParser class holding a single static method to parse the arguments.
I will visualize it like this:
...ANSWER
Answered 2017-Aug-09 at 18:53A few random thoughts.
(a) Can you even pin down precisely what it means for a class to have some "responsibility" ??? And subsequently, if (as I suspect) all you have is vague notions without any formally observable / measurable properties / characteristics to pin down the meaning of "responsibility", then how can you say as unequivocally as you do that what you have is violating it ?
(b) If your application grows large enough or you want certain advanced means (JMX) to interact with your running application, you will split "MyEngine" and "StartMyEngine" just naturally as you go. Methinks. If your application is not large/advanced/complex/critical/... enough, then not having that split will not matter much.
(c) Every instance method M(args) is the semantic equivalent of a static method SM that has all of args plus an argument of the type of the instance. So an instance method M() on class Foo is equivalent to a static method SM(Foo foo). This starts to reveal why your static print method "does not belong" in class BlackJackGame : it does not have any argument of type BlackJackGame and therefore cannot ever be said to relate in any way to the BlackJackGame type. Fundamentally speaking the same holds of course for main(String[]) but in that case its usage has become a common pattern, and moreover, there has to be an entry point somewhere somehow otherwise no java process could ever get started at all.
QUESTION
I am currently improving my program that I posted on CR but I ran into a problem. I have a property called Total
but when I try to set it to a value (0) it remains the same.
This is the property:
...ANSWER
Answered 2018-May-10 at 15:56Actually you're recalculating the total everytime you call the getter of your property.
A solution is to make the field total
as Nullable
so if it is null
, you do the logic you're doing actually otherwise return what is set in the field total
.
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