🚀 go-pugleaf

> I'm trying to convert a personal app from Delphi to C# but I'm having some
> trouble finding a C# equivalent for sets. I've been paging through all C#
> books I have here and just can't find it. What I want to do is declare a 
> set
> of f.ex. characters:
>
>  const WhiteSpace = [#32, #10, #13, #9];
>
> and check memership like this:
>
>  if c in WhiteSpace then...
>
> but I don't know how, using arrays is an alternative, but I need something
> faster and easier to play with. Any ideas?

For enumerations, use an integer type and the bit wise operators.

> Another problem I'm having is reading from a stream 
> (System.IO.FileStream).
> The BeginRead method takes a byte array, but I need to read words (2 
> bytes)
> in order to compare some values, so is there something like BlockRead from
> Delphi?

There isn't. C#, and the whole dotnet, is a type safe environment. You have 
to rebuild each data type from the array of byte. In you example, to rebuild 
a word, you read the low byte, then the high vyte (assuming words are 
written in that order which is the native order for Intel processors), your 
word is the high byte multiplyed by 256 and added to the low byte.

You can derive from FileStream and implement methods to read various 
datatypes you need.

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francois.piette@overbyte.be
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