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1.Round£¨ËÄÉáÁùÈëÎåÁôË«£©
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var
i, j: Integer;
begin
i := Round(1.5); // iµÈÓÚ2
j := Round(2.5); // jµÈÓÚ2
end;
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function ListFiles(Dir: String):TStrings;
var
FSearchRec: TSearchRec;
FileList: TStrings;
FindResult: Integer;
begin
if Dir[length(Dir)]<>'\' then Dir:=Dir+'\';
FileList :=TStringList.Create;
FindResult:=FindFirst(Dir+'*.*,faAnyFile+faDirectory,FSearchRec);
while FindRes ......

Delphi ÖÐµÄ Var buffer ¿ªÀàÐͲÎÊý

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ÏóDelphiÖÐfunction   Read(var   Buffer;   Count:   Longint):   Longint;   override;ÏóBufferÕâÑùûÓÐÀàÐ͵IJÎÊý¾¿¾¹Ó¦¸ÃÔõô¸ø²ÎÊý£¿£¿£¿£¿  
  Õâ˵Ã÷BufferÊÇͨ¹ýµØÖ··½Ê½´«µÝµÄ£¬Ò»°ã˵À´Ö» ......

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ÔÚsql server µÄnorthwide Öн¨Á¢Ö÷±í
create table sell_h( sell_id char(10),cust_name char(10) Primary key(sell_id) )
go
create table sell_h( sell_id char(10),inv char(10) ,amt float,qty float Primary key(sell_id,inv) )
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1.ҪעÒⱨ´Ó±íqrydetailÉèÖÃ,Åú±£´æ¿ªÊ½. ¼´.locktype= batc ......

DelphiÈÕÆÚº¯Êý

ËùÔÚµ¥Ôª£º DateUtils
Day ¿ªÍ·µÄº¯Êý
1¡¢DayOf()
ÃèÊö£º ʹÓà DateOf º¯ÊýÓÃÀ´°ÑÒ»¸ö TDateTime ÀàÐ͵ıäÁ¿×ª±ä³ÉÒ»¸ö Ö»´øÓÐÈÕÆÚµÄ TDateTime ÀàÐͱäÁ¿¡£ ÀýÈ磺 showmessage(DateTimetostr(dateof(now()))); ÄãµÃµ½µÄÊÇ 2003/03/19 ¶ø showmessage(DateTimetostr((now()))); µÃµ½µÄÊÇ
2¡¢DateTimeTostr()
ÃèÊö£º Da ......
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