does C# have pointers??

[Meshal]

does c# have pointers !!

and if the answer is no ..

how can i implement the static/dynamic hashing?

[nvoigt]

The answer is yes and yes and no.

Basically, every reference type in .NET is a pointer.

You can have explicit pointers in unmanaged code including a ton of complications that come with the full unmanaged package.

And no, to the user, nothing in C# is handled like a pointer. There is no dereferencing or an -> operator.


I don't really know what you mean with dynamic/static hashing, but you can implement it in C#. Maybe you can explain what you want to achieve.

[Meshal]

thanks for answers my questions ..

and what i mean by static and dynamic hashing is this:
statick-hashing
http://www.cs.sfu.ca/CC/354/zaiane/m...00000000000000
http://www.dis.uniroma1.it/~catarci/...3LT/sld003.htm

dynamic hashing(extensible hashing)
http://www.dis.uniroma1.it/~catarci/...3LT/sld005.htm

how can i implement those hashing technique in C# , because i need a pointer to point to the buckets

buckets = blocks

[CornedBee]

You use references to point to the buckets, in simple, standard C#. There's nothing special about hashing in this regard.

[Meshal]

how i can reference to point to the bucket ??

can you show me an example ?!

[CornedBee]

Bucket[] buckets = new Bucket[numBuckets];

[wiiire]

Yeah gotta love C# for this particular ambiguity

[CornedBee]

Which one?

[wiiire]

Its illustrious memory handling

[Meshal]

so how can binary tree or binary search programmed in C# without using real pointers ?!!

[nvoigt]

C# has pointers. It's just that C# has nothing else that's probably a bit confusing. Every reference type in C# is what C++ would call a pointer. You just don't need to free the memory, because it's managed/garbage collected. And you don't need those pointer semantics/syntactics, because the compiler already knows if something is a pointer ( reference type ) or not ( value type ).

CObject* o = new CObject( "test" ); // perfectly valid C++

Object o = new Object( "test" ); // perfectly valid C#

Those two lines are exactly the same. An object is created dynamically.

[siavoshkc]

C# supports C++ type pointers. But it is called unsafe code. It is better to use .NET standard libs for those kind of operations OR you may go to MSDN for unsafe code.