whats new ¦  programming tips ¦  indy articles ¦  intraweb articles ¦  informations ¦  links ¦  interviews
 misc ¦  tutorials ¦  Add&Win Game

Tips (1541)

Database (90)
Files (137)
Forms (107)
Graphic (114)
IDE (21)
Indy (5)
Internet / LAN (130)
IntraWeb (0)
Math (76)
Misc (126)
Multimedia (45)
Objects/
ActiveX (51)

OpenTools API (3)
Printing (35)
Strings (83)
System (266)
VCL (242)

Top15

Tips sort by
component


Search Tip

Add new Tip

Add&Win Game

Advertising

18 Visitors Online


 
...calculate Java hashCode?
Autor: Patrik Forsberg
Homepage: http://www.woize.com
[ Print tip ]  

Tip Rating (15):  
     


function hashCode(val: string): Integer;
var
  
i: Integer;
  res: Extended;
  x: Integer;

  function RoundEx(x: Extended): Integer;
  begin
    
Result := Trunc(x) + Trunc(Frac(x) * 2);
  end;
begin
  
res := 0;

  for i := 1 to Length(val) do
  begin
    
res := res + Ord(val[i]) * Power(31, Length(val) - (i - 1) - 1);
  end;

  Result := RoundEx(res);
end;


 

Rate this tip:

poor
very good


Copyright © by SwissDelphiCenter.ch
All trademarks are the sole property of their respective owners