+- Parsi Coders (http://parsicoders.com)
+-- انجمن: Software Development Programming (http://parsicoders.com/forumdisplay.php?fid=37)
+--- انجمن: Pascal/Delphi (http://parsicoders.com/forumdisplay.php?fid=45)
+---- انجمن: Delphi (http://parsicoders.com/forumdisplay.php?fid=69)
+---- موضوع: کار با رشته ها در دلفی 2010 (/showthread.php?tid=403)
کار با رشته ها در دلفی 2010 - Amin_Mansouri - 06-18-2011
سلام
تو دلفی 2010 میخواستم از تابع leftstr rightstr و ... استفاده منم با مشکل برخوردم فهمیدم که باید در قسمت use
کد:
strutilsکد:
unit Unit1;
//coder: amin mansouri
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,strutils,
Dialogs;
type
TForm1 = class(TForm)
procedure FormCreate(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
procedure TForm1.FormCreate(Sender: TObject);
var
s : string;
begin
s := 'ABOUT DELPHI PROGRAMMING www.parsicoders.com';
s := rightStr(s,20);
showmessage(s)
end;
end.RE: کار با رشته ها در دلفی 2010 - Amin_Mansouri - 06-18-2011
اینم تابع instr
کد:
fuction InStr(sIni: string; sSubStr: string): Boolean;
var
iPos: integer;
begin
iPos := Pos(sSubStr, sIni);
If iPos <> 0 Then
Result := True
Else
Result := False
end;کد:
{
Example Usage:
procedure Example();
var
test: string;
begin
test := 'ip lorem sum';
If InStr(test, 'lorem') Then ShowMessage('String found in identifier test');
end;
Example();
}RE: کار با رشته ها در دلفی 2010 - Amin_Mansouri - 06-18-2011
این هم توابع vb6 برای کار با stringha تبدیل شده به دلفی
کد:
!**************************************
! Name: Replace,InStr,Left,Right,LeftTrim,RightTrim,Reverse,Split,Replace,Mid Functions
! Description:This is just like the name says, The Following Vb functions for Delphi all coded/translated by me:
RightTrim
LeftTrem
InStr
Mid
Left
Right
Replace
Split
Reverse
! By: Tanner Ezell (aka Lord Nova Ice)
!
!This code is copyrighted and has! limited warranties.Please see http://www.Planet-Source-Code.com/vb/scripts/ShowCode.asp?txtCodeId=382&lngWId=7!for details.!**************************************
unit Functions;
interface
uses
Windows,Messages, SysUtils, Classes, Graphics,StdCtrls;
function RightTrim(const s:String):String;
function LeftTrim(const s:String):String;
function InStr(Start: integer; Source: string; SourceToFind: string): integer;
function Mid(Source: string; Start: integer; Length: integer): string;
function Left(Source: string; Length: integer): string;
function Right(Source: string; Lengths: integer): string;
function Replace(sData: String; sSubstring: String; sNewsubstring: string): String;
function Split(Source, Deli: string; StringList: TStringList): TStringList;
function Reverse(Line: string): string;
implementation
function Reverse(Line: string): string;
var i: integer;
var a: string;
begin
For i := 1 To Length(Line) do
begin
a := Right(Line, i);
Result := Result + Left(a, 1);
end;
end;
function Split(Source, Deli: string; StringList: TStringList): TStringList;
var
EndOfCurrentString: byte;
begin
repeat
EndOfCurrentString := Pos(Deli, Source);
if EndOfCurrentString = 0 then
StringList.add(Source)
else
StringList.add(Copy(Source, 1, EndOfCurrentString - 1));
Source := Copy(Source, EndOfCurrentString + length(Deli), length(Source) - EndOfCurrentString);
until EndOfCurrentString = 0;
result := StringList;
end;
function Replace(sData: String; sSubstring: String; sNewsubstring: string): String;
var
i: integer;
lSub: Longint;
lData: Longint;
begin
i := 1;
lSub := Length(sSubstring);
lData := Length(sData);
repeat
begin
i := InStr(i, sData, sSubstring);
If i = 0 Then
begin
sNewSubString := sData;
Exit
end
Else
sData := Copy(sData, 1, i - 1) + sNewsubstring + Copy(sData, i + lSub, lData);
i := i + lSub;
End;
Until i > lData;
Replace := sData;
end;
function Left(Source: string; Length: integer): string;
begin
Result := copy(Source,1,Length);
end;
function Right(Source: string; Lengths: integer): string;
begin
Result := copy(source,Length(Source) - Lengths,Lengths);
end;
function Mid(Source: string; Start: integer; Length: integer): string;
begin
Result := copy(Source,Start,Length);
end;
function InStr(Start: integer; Source: string; SourceToFind: string): integer;
begin
Result := pos(SourceToFind,copy(Source,Start,Length(Source) - (Start - 1)));
end;
function RightTrim(const s:String):String;
var
i:integer;
begin
i:=length(s);
while (i>0) and (s[i]<=#32) do
Dec(i);
result:=Copy(s,1,i);
end;
function LeftTrim(const s:String):String;
var
i, L:integer;
begin
L:=length(s);
i:=1;
while (i<=L) and (s[i]<=#32) do
Inc(i);
result:=Copy(s,i, MaxInt);
end;
end.RE: کار با رشته ها در دلفی 2010 - rahimpakdelan - 11-09-2011
mamnoon