Encapsulating the Order of a Collection in OOP










1















Let's say you have a collection of objects that are part of a class:



[A, B, C, D]



But the order they are in means something. There are a finite number of orderings that you want to be able to delegate at runtime. For example [C, A, B, D], [B, D, A, C], etc. How would you go about encapsulating the notion of order in such a way that allows you to change the ordering at runtime, and add new orderings later on without changing existing code?



The language doesn't matter, but an explanation in Java or C++ is preferred.










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  • 1





    Is the object collection set fixed? If it is, every possible order can be enumerated, and you can represent it, say with a single int. Then you change the int or add more ints for more collections in different order.

    – progmatico
    Nov 15 '18 at 15:50















1















Let's say you have a collection of objects that are part of a class:



[A, B, C, D]



But the order they are in means something. There are a finite number of orderings that you want to be able to delegate at runtime. For example [C, A, B, D], [B, D, A, C], etc. How would you go about encapsulating the notion of order in such a way that allows you to change the ordering at runtime, and add new orderings later on without changing existing code?



The language doesn't matter, but an explanation in Java or C++ is preferred.










share|improve this question



















  • 1





    Is the object collection set fixed? If it is, every possible order can be enumerated, and you can represent it, say with a single int. Then you change the int or add more ints for more collections in different order.

    – progmatico
    Nov 15 '18 at 15:50













1












1








1








Let's say you have a collection of objects that are part of a class:



[A, B, C, D]



But the order they are in means something. There are a finite number of orderings that you want to be able to delegate at runtime. For example [C, A, B, D], [B, D, A, C], etc. How would you go about encapsulating the notion of order in such a way that allows you to change the ordering at runtime, and add new orderings later on without changing existing code?



The language doesn't matter, but an explanation in Java or C++ is preferred.










share|improve this question
















Let's say you have a collection of objects that are part of a class:



[A, B, C, D]



But the order they are in means something. There are a finite number of orderings that you want to be able to delegate at runtime. For example [C, A, B, D], [B, D, A, C], etc. How would you go about encapsulating the notion of order in such a way that allows you to change the ordering at runtime, and add new orderings later on without changing existing code?



The language doesn't matter, but an explanation in Java or C++ is preferred.







oop






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share|improve this question













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edited Nov 14 '18 at 11:58







William

















asked Nov 14 '18 at 11:24









WilliamWilliam

1114




1114







  • 1





    Is the object collection set fixed? If it is, every possible order can be enumerated, and you can represent it, say with a single int. Then you change the int or add more ints for more collections in different order.

    – progmatico
    Nov 15 '18 at 15:50












  • 1





    Is the object collection set fixed? If it is, every possible order can be enumerated, and you can represent it, say with a single int. Then you change the int or add more ints for more collections in different order.

    – progmatico
    Nov 15 '18 at 15:50







1




1





Is the object collection set fixed? If it is, every possible order can be enumerated, and you can represent it, say with a single int. Then you change the int or add more ints for more collections in different order.

– progmatico
Nov 15 '18 at 15:50





Is the object collection set fixed? If it is, every possible order can be enumerated, and you can represent it, say with a single int. Then you change the int or add more ints for more collections in different order.

– progmatico
Nov 15 '18 at 15:50












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