[DUG] Strings Question

[Rohit Gupta]

Hi Jeremy,

the two problems I found were to do with char and accessing string[0].

string[0] :  I ended up doing a global search through the whole app for 
[0] and fixed every one of them.
char : unless you are careful, I found that even though the code 
compiles, it does the wrong thing to what you expect - I had to inspect 
each usage of char and sort its type.

I have CRC routines.  I am still using shortstring in them.  And the 
unit testing passes.

Rohit

On 16/11/2016 10:00, Jeremy Coulter wrote:
> HI all.
> I have a Delphi 2007 application that I NEED to upgrade to Delphi XE 8 
> or greater.
> The problem is, I am having trouble converting the code due to the 
> fact that Embarcadero changed how "String" etc. is used when they 
> added the support for Unicode.
> I have had a couple of cracks at the conversion and I am "close" on 
> one project but I am starting again because I want to make sure I am 
> using the right variable types and not guessing.
> There is a bit of MD5 conversion going on and the different variable 
> types of course generated diff MD5 codes for the same string being 
> converted and it is a bit confusing :-)
>
> The main variable types are:
>
> String
> Byte
> Integer
> LongInt
> Pointer
> Array of Char
> PChar
> Char
>
> My understanding is the variables should now be :-
>
> String = AnsiString?
> Byte = Still Byte?
> Integer = Still Integer
> LongInt =Still LongInt
> Pointer = Still Pointer
> Array of Char = PAnsiCHAR ?
> PChar = PAnsiChar?
> Char = AnsiChar?
>
> Am I correct with the above that I have highlighted in "Red" ??
>
> Thanks, Jeremy
>
>
>
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-- 

Regards

*Rohit Gupta*
B.E. Elec., M.E., Mem IEEE, Mem IET
Technical Director
Computer Fanatics Ltd

*Tel *4892280
*Fax *4892290
*Web *www.cfl.co.nz

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