Difference between ArrayList and List<object> ?

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Murat Ozgur - 20 Oct 2006 09:23 GMT

Hello,

Is there any difference between ArrayList and List<object> ? Which
one should I use ?

Thanks.

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Nicolas Guinet - 20 Oct 2006 11:57 GMT

ArrayList (donet 1.1) is obsolete in dotnet 2.0
You must use List<T>
more performant than ArrayList
access to element is done in constant time

LinkedList<T> : time to access an element depend of the number of elements
but add is done in constant time

Regards
Nicolas Guinet

"Murat Ozgur" <muratozgur@gmail.com> a écrit dans le message de news:
1161332607.659706.187780@m7g2000cwm.googlegroups.com...

> Hello,
>
> Is there any difference between ArrayList and List<object> ? Which
> one should I use ?
>
> Thanks.

Reply to this Message

David Anton - 20 Oct 2006 15:24 GMT

ArrayList is not obsolete in .NET 2, but it is nearly always a poor choice.
List<T> is a superior alternative since you can specify exactly what your
list contains and not have to cast back from object when reading from the
list.

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> ArrayList (donet 1.1) is obsolete in dotnet 2.0
> You must use List<T>
[quoted text clipped - 15 lines]
> >
> > Thanks.

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modosansreves@gmail.com - 29 Nov 2006 17:17 GMT

Nicolas Guinet написав:

> ArrayList (donet 1.1) is obsolete in dotnet 2.0
> You must use List<T>
> more performant than ArrayList
> access to element is done in constant time

In any container with O(n) elements the most we can have is the
O(log(n)) access time.

> LinkedList<T> : time to access an element depend of the number of elements
> but add is done in constant time
[quoted text clipped - 10 lines]
> >
> > Thanks.

Reply to this Message

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Difference between ArrayList and List<object> ?

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