C# equivalents of STL containers?

This is a discussion on C# equivalents of STL containers? within the C# Programming forums, part of the General Programming Boards category; I've got a lot of experience in C++, just looking at C# now. The basics seem easy enough, but what ...

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    C# equivalents of STL containers?

    I've got a lot of experience in C++, just looking at C# now. The basics seem easy enough, but what I've not yet found are good analogs to STL containers in C++.

    I'm just wondering what the C# equivalents to certain C++ containers are:

    std::vector -- Probably System.Collections.Arraylist?
    std::list
    std::map -- Probably System.Collections.Hashtable?
    std::set -- I suppose one could use System.Collections.Hashtable and discard the value.
    std::multimap
    std::multiset
    You ever try a pink golf ball, Wally? Why, the wind shear on a pink ball alone can take the head clean off a 90 pound midget at 300 yards.

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    Code Goddess Prelude's Avatar
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    Roll everything up into List<> and Dictionary<> and that's how it is in C#. You also have sorted versions of those containers too, but I assume the idea is not to worry about such "trivial" matters as the difference between a vector and a linked list.
    My best code is written with the delete key.

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    Cat without Hat CornedBee's Avatar
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    Generally it's System.Collections and System.Collections.Generic in C#2.

    But if you want my opinion, what .Net offers is a joke. Java has got a far more complete and interesting container collection.

    There is no linked list. There's AFAICR no tree map (which is what std::map effectively is). I can't remember anything about a set.


    Prelude, your new avatar is irritating.
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    MFC killed my cat! manutd's Avatar
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    Agreed Prelude. Switch back
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    Code Goddess Prelude's Avatar
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    >Agreed Prelude. Switch back
    Okay, but how far back? How about number 1?
    My best code is written with the delete key.

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    MFC killed my cat! manutd's Avatar
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    Nice
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    Quote Originally Posted by CornedBee
    There is no linked list.
    Erm, LinkedList<>?

    I generally use the following to replicate similar data structures from the STL.
    std::vector - List<T>
    std::list - LinkedList<T>
    std::map - Dictionary<Tkey, Tvalue>
    std::set - Dictionary<Tkey, Tvalue> (with null values)
    std::multimap - Dictionary<Tkey, List<Tvalue>>
    std::multiset - Dictionary<Tkey, int> (with int keeping count of the number of Tkeys)
    If I did your homework for you, then you might pass your class without learning how to write a program like this. Then you might graduate and get your degree without learning how to write a program like this. You might become a professional programmer without knowing how to write a program like this. Someday you might work on a project with me without knowing how to write a program like this. Then I would have to do you serious bodily harm. - Jack Klein

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    Code Goddess Prelude's Avatar
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    >Erm, LinkedList<>?
    I took a look and I was mistaken. It seems that 2.0 has List<>, Stack<>, Queue<>, Dictionary<>, SortedList<>, SortedDictionary<>, and LinkedList<>. That's a much better selection that I thought before and maps more closely to the STL if you want to do a comparison.

    >I generally use the following to replicate similar data structures from the STL.
    I generally tailor my solutions to .NET rather than try to apply relations that might not be present. Then again, I also write my own data structures about half the time, so I might not be the best person to listen to.
    My best code is written with the delete key.

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    Actually piano, having played with C# and reading a lot of documentation pages once I was given a kick in the right direction, it seems SortedDictionary<> is closest to std::set and std::map in that it sorts by key (often nice) and it seems to internally use a balanced tree structure (judging by the big-O of the insertion/access/etc. times). Dictionary<> uses a hashtable which is a useful tool also.

    Nice idea though on the multiset/multimap!
    You ever try a pink golf ball, Wally? Why, the wind shear on a pink ball alone can take the head clean off a 90 pound midget at 300 yards.

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    Wow...I didn't know about the SortedDictionary class. Sweet.
    If I did your homework for you, then you might pass your class without learning how to write a program like this. Then you might graduate and get your degree without learning how to write a program like this. You might become a professional programmer without knowing how to write a program like this. Someday you might work on a project with me without knowing how to write a program like this. Then I would have to do you serious bodily harm. - Jack Klein

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