Need some helo from C# experts

[rocotilos]

I want to know the equivalent of these classes in Obj-C:

BinaryWriter
StringCollection
MemoryStream

I am trying to basically create a file, bit by bit (from header, etc), I found a code in C#, some part of it I can make sense of it, but Im not sure the equivalent of the above classes/types of C# in Obj-C.

Any C# guru lurking in here, pls help... I would appreciate it very much!!

Thanks.

EDIT: darn it, i mistyped the subject. it is not "helo", but "help". Sorry.

[Mr Jack]

I'm reasonably familiar with C#, but I only know a minimal amount of Objective-C. If you could tell me what you need to do, I may be able to tell you what you want to use?

[Centurion Games]

Originally Posted by rocotilos

I want to know the equivalent of these classes in Obj-C:

BinaryWriter
StringCollection
MemoryStream

I am trying to basically create a file, bit by bit (from header, etc), I found a code in C#, some part of it I can make sense of it, but Im not sure the equivalent of the above classes/types of C# in Obj-C.

Any C# guru lurking in here, pls help... I would appreciate it very much!!

Thanks.

EDIT: darn it, i mistyped the subject. it is not "helo", but "help". Sorry.

I'm not sure of Obj C having familar things, but C does.

BinaryWriter is just equivalent to using fopen and fwrite, to open/create a binary file, and write values to it. (Int, float, short, bytes, etc, not classes/objects)

StringCollection is basically a linked list of null terminated strings. This could be done with Char *, STL String, or maybe NSStrings, I imagine written out to file, it includes a total number of strings, and a number of characters per each string entry.

MemoryStream, is essentially just a dynamically re-sizeable memory block or array that you stuff with values (int, short, float, etc). This can easily be done by just allocating a block of memory, and using memcpy, and resizing as needed.

If you post more specifics or the code itself, might be able to help more.

[Mr Jack]

Originally Posted by Centurion Games

I'm not sure of Obj C having familar things, but C does.

Despite the name C# is not C derived at all, and really only shares some syntax.

BinaryWriter is just equivalent to using fopen and fwrite...

Not 100% sure, it probably depends on what you are wanting to do - have a look in Stream and StreamReader.

StringCollection is basically a linked list of null terminated strings...

You probably want to use List<String>? (Assuming you're using C# 2.0 or greater) There are a few other alternatives available though.

MemoryStream, is essentially just a dynamically re-sizeable memory block or array that you stuff with values (int, short, float, etc)...

Hmm... You don't normally work with raw memory in C#, what are you trying to do? There is a MemoryStream class in C# not sure if it does what you want?

[Centurion Games]

Originally Posted by Mr Jack

Despite the name C# is not C derived at all, and really only shares some syntax.



Not 100% sure, it probably depends on what you are wanting to do - have a look in Stream and StreamReader.



You probably want to use List<String>? (Assuming you're using C# 2.0 or greater) There are a few other alternatives available though.



Hmm... You don't normally work with raw memory in C#, what are you trying to do? There is a MemoryStream class in C# not sure if it does what you want?

Perhaps I misunderstood the OP, I thought he wanted to convert c# code to Obj C/C.

[rocotilos]

Hello guys.

Thanks for replying. But yeah my intention was to translate the C# code I found into ObjC.

But, nvm, I have gone on a different route - totally writing the code from scratch using Obj-C.

Thanks for replying.

Anyways, just for info, I am using the NSFileHandle, assign a filehandle to be in writing mode. THen I convert the bytes into NSData, which then I write the data in chunks to the filehandle using writeData: methods. Seems to work ok (same as the C# code I found).

Cheers.

[Mr Jack]

Originally Posted by Centurion Games

Perhaps I misunderstood the OP, I thought he wanted to convert c# code to Obj C/C.

Nah, apparently it was me who misunderstand. Sorry guys