Question

Long String 255+ elements

Asked by: SaLz

How can i get around this 255 limit with a string?

Sal.

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Asked On
2005-08-24 at 15:01:27ID21539093
Tags

255

,

string

,

elements

Topic

Delphi Programming

Participating Experts
4
Points
500
Comments
13

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Answers

 

by: AndersonCarliPosted on 2005-08-24 at 15:28:31ID: 14747693

Open your project, in Delphi menu choose:
Project, Options
In Compiler tab check the option "Huge Strings"

 

by: SaLzPosted on 2005-08-24 at 15:41:10ID: 14747743

its ticked already.

[Error] main.pas(152): E2056 String literals may have at most 255 elements

but still get this error

 

by: AndersonCarliPosted on 2005-08-24 at 15:50:03ID: 14747771

Break your string in chunks of max 255

s := '250 char str ....' +
       'other chunk of 255'
       '....';

 

by: SaLzPosted on 2005-08-24 at 15:53:23ID: 14747791

how can I do that auto?

 

by: AndersonCarliPosted on 2005-08-24 at 16:10:20ID: 14747898

Sorry, I dont undestand what you want to say.. but try this:

var
  s:string
begin
  s:= '01234567890123456789012345678901234567890123456789'+ // 50 chars
      '01234567890123456789012345678901234567890123456789'+ // 100
      '01234567890123456789012345678901234567890123456789'+ // 150
      '01234567890123456789012345678901234567890123456789'+ // 200
      '01234567890123456789012345678901234567890123456789'+ // 250
      '01234567890123456789012345678901234567890123456789'; // 300

 

by: tobjectpascalPosted on 2005-08-24 at 20:15:51ID: 14748908

lol the answer to this problem was in your question :)

S:='255chars......'
    +'another255chars....'
    +'etc etc';


don't give me any points for that, the answer has already been given, i just found it funny.


"Question Title: Long String 255+ elements"

+ is the answer :)

 

by: RadikalQ3Posted on 2005-08-25 at 01:24:40ID: 14749946

Hi!

Delphi manage severals types of strings:

Type      Maximum length      Memory required      Used for
ShortString      255 characters                2 to 256 bytes      backward compatibility
AnsiString      ~2^31 characters      4 bytes to 2GB            8-bit (ANSI) characters, DBCS ANSI, MBCS ANSI, etc.
WideString      ~2^30 characters      4 bytes to 2GB      Unicode characters; multi-user servers and multi-language applications

If you get this error is because in any part of your program, the string that you are using is defined as shortstring.

The default strings used in Delphi (from Delphi 2 or maybe Delphi 3) is AnsiString...

 

by: SaLzPosted on 2005-08-25 at 08:17:16ID: 14752864

Error..

procedure TForm1.Button1Click(Sender: TObject);
var
  a : String;
  b : ShortString;
  c : AnsiString;
  d : WideString;
begin
  a := 'safafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fas';
  b := 'safafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fas';
  c := 'safafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fas';
  d := 'safafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fassafafa fa afs fas';
end;


[Error] main.pas(542): E2056 String literals may have at most 255 elements
[Error] main.pas(543): E2056 String literals may have at most 255 elements
[Error] main.pas(544): E2056 String literals may have at most 255 elements
[Error] main.pas(545): E2056 String literals may have at most 255 elements


any thoughts?

 

by: RadikalQ3Posted on 2005-08-25 at 08:20:50ID: 14752907

Hummm too many beers tonight...

tobjectpascal says to you the answer...

Simply break the declarations:

a := 'safafa fa afs fassafafa fa afs fassafafa fa afs fas'+
'safafa fa afs fassafafa fa afs fassafafa fa afs fassafafa'+
.....

etc

 

by: RadikalQ3Posted on 2005-08-25 at 08:29:44ID: 14752999

I thing that this is not definable...
See the topic "Character strings" in the Delphi help:

A character string, also called a string literal or string constant, consists of a quoted string, a control string, or a combination of quoted and control strings. Separators can occur only within quoted strings.
A quoted string is a sequence of up to 255 characters from the extended ASCII character set, written on one line and enclosed by apostrophes

For what reason you need longer literals? :?

 

by: AndersonCarliPosted on 2005-08-25 at 12:34:07ID: 14755687

>RadikalQ3:  For what reason you need longer literals? :?

I oftern use for sql strings in code..
sql = 'select .....'+
        'where....'

 

by: SaLzPosted on 2005-08-25 at 14:46:03ID: 14756963

I was really looking for an alternative, because I use that same method already.

but thxs for trying

 

by: BlackTigerXPosted on 2005-08-26 at 11:10:02ID: 14763304

Salz-

for such long strings consider using a file instead, you can edit the file in any text editor, then load it to Delphi using TStringList

aStringList:TStringList;
aStringVar:string;
begin
  aStringList:=TStringList.Create;
  aStringList.LoadFromFile('thefile.txt');
  aStringVar:=aStringList.Text;
...

20120131-EE-VQP-002

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