Programming Forums > Application Development > C++

Writlaus · Mar 31st, 2006, 7:58 PM

I see MSDN has some things on the ArrayList object, but I can't use them in my program. How do I include them in my program? I've tried #include <ArrayList>, but that didn't work...

nnxion · Apr 1st, 2006, 4:28 AM

It's for C# (.NET). You will have to do with std::vector or the likes.

P.S. In C# you would do: using System.Collections;

Jimbo · Apr 1st, 2006, 4:45 AM

I'm pretty sure you can use the .NET libraries in VC++, but I've never actually tried. You might want to look at some of their example codes and see how they do it. Quick snippet from one of their pages:

Quote:

Originally Posted by msdn

[C++]
#using <mscorlib.dll>
using namespace System;
using namespace System::Collections;

nnxion · Apr 1st, 2006, 4:47 AM

Jimbo, you are right, VC++.NET. Not C++ though.

If I was going to do .NET, I'd definitely use C#.

Jimbo · Apr 1st, 2006, 4:56 AM

Quote:

Originally Posted by nnxion

If I was going to do .NET, I'd definitely use C#.

agreed

Writlaus · Apr 1st, 2006, 8:29 PM

Is there something I can use like an ArrayList in C++?

An ArrayList is just a list that you can keep adding elements to, and the size will increase as the amount of items in the list increases.

InfoGeek · Apr 2nd, 2006, 12:17 AM

You're probably looking for std::vector.

nnxion · Apr 2nd, 2006, 5:07 AM

Quote:

Originally Posted by InfoGeek

You're probably looking for std::vector.

Thanks for repeating that, he needed it.

Ooble · Apr 2nd, 2006, 12:34 PM

Jimbo's right, and if you're making a .NET application, you probably want to use the System::Collections::ArrayList class as opposed to std::vector so your application can be ported to different languages easily.

As an aside, .NET 2.0 provides the System::Collections::Generics::List class, which is more equivalent to std::vector in that it is a template class which holds one specific type of object, as opposed to the ArrayList, which can contain any object. The difference can be seen as follows:

(Toggle Plain Text)

using System;
using System::Collections;
using System::Collections::Generics;

...

ArrayList myArrayList;
myArrayList.Add("foo");
myArrayList.Add(3);

List<Int32> myList;
myList.Add(4);
myList.Add(37);

// prints: foo 3
Console::WriteLine("{0} {1}", (String)myArrayList[0], (Int32)myArrayList[1]);
// prints: 4 37
Console::WriteLine("{0} {1}", myList[0], myList[1]);

Disclaimer: not tested, sorry.

Writlaus · Apr 2nd, 2006, 8:30 PM

I'm using C++ though--Isn't that :: operator for some other language?

Mar 31st, 2006, 7:58 PM	#1
Writlaus Hobbyist Programmer Join Date: Nov 2005 Posts: 149 Rep Power: 4	ArrayList and MSDN I see MSDN has some things on the ArrayList object, but I can't use them in my program. How do I include them in my program? I've tried #include <ArrayList>, but that didn't work...

Apr 1st, 2006, 4:28 AM	#2
nnxion Programming Guru Join Date: Jun 2005 Location: elemental plane Posts: 1,429 Rep Power: 5	It's for C# (.NET). You will have to do with std::vector or the likes. P.S. In C# you would do: using System.Collections; __________________ "Employ your time in improving yourself by other men's writings, so that you shall gain easily what others have labored hard for." -- Socrates

Apr 1st, 2006, 4:47 AM	#4
nnxion Programming Guru Join Date: Jun 2005 Location: elemental plane Posts: 1,429 Rep Power: 5	Jimbo, you are right, VC++.NET. Not C++ though. If I was going to do .NET, I'd definitely use C#. __________________ "Employ your time in improving yourself by other men's writings, so that you shall gain easily what others have labored hard for." -- Socrates

Apr 2nd, 2006, 12:17 AM	#7
InfoGeek Professional Programmer Join Date: Jun 2005 Location: India, The great. Posts: 435 Rep Power: 4	You're probably looking for std::vector. __________________ PFO - My daily dose of technology.

Apr 2nd, 2006, 12:34 PM	#9
Ooble I eat cake for breakfast. Join Date: Jul 2004 Location: In my box. Posts: 4,434 Rep Power: 9	Jimbo's right, and if you're making a .NET application, you probably want to use the System::Collections::ArrayList class as opposed to std::vector so your application can be ported to different languages easily. As an aside, .NET 2.0 provides the System::Collections::Generics::List class, which is more equivalent to std::vector in that it is a template class which holds one specific type of object, as opposed to the ArrayList, which can contain any object. The difference can be seen as follows: (Toggle Plain Text) using System; using System::Collections; using System::Collections::Generics; ... ArrayList myArrayList; myArrayList.Add("foo"); myArrayList.Add(3); List<Int32> myList; myList.Add(4); myList.Add(37); // prints: foo 3 Console::WriteLine("{0} {1}", (String)myArrayList[0], (Int32)myArrayList[1]); // prints: 4 37 Console::WriteLine("{0} {1}", myList[0], myList[1]); using System; using System::Collections; using System::Collections::Generics; ... ArrayList myArrayList; myArrayList.Add("foo"); myArrayList.Add(3); List<Int32> myList; myList.Add(4); myList.Add(37); // prints: foo 3 Console::WriteLine("{0} {1}", (String)myArrayList[0], (Int32)myArrayList[1]); // prints: 4 37 Console::WriteLine("{0} {1}", myList[0], myList[1]); Disclaimer: not tested, sorry. __________________ Me :: You :: Them

Apr 1st, 2006, 8:29 PM	#6
Writlaus Hobbyist Programmer Join Date: Nov 2005 Posts: 149 Rep Power: 4	Is there something I can use like an ArrayList in C++? An ArrayList is just a list that you can keep adding elements to, and the size will increase as the amount of items in the list increases.

Apr 2nd, 2006, 8:30 PM	#10
Writlaus Hobbyist Programmer Join Date: Nov 2005 Posts: 149 Rep Power: 4	I'm using C++ though--Isn't that :: operator for some other language?

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Thread Tools
Show Printable Version Email this Page
Display Modes
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode

Programming Forums > Application Development > C++

ArrayList and MSDN