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Boolean 1 Byte
ByteBool 1 Byte
WordBool 2 Bytes£¨1 Word£©
LongBool 4 Bytes£¨2 Words£©
¶ÔÓÚByteBool£¬WordBoolºÍLongBoolÈýÖÖÀàÐÍTrue³£Á¿µÄֵΪ·ÇÁ㣬FalseΪÁ㣬¿ÉÒÔÓÃOrdº¯ÊýÑéÖ¤£»
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È»¶ø£¬ÔÚDelphiÖв¼¶û±í´ïʽºÍInteger/RealÊDz»¼æÈݵġ£ÏÂÃæµÄ±í¸ñ¶Ô±ÈÁËBooleanÓëByteBool/WordBool/LongBoolÔÚÒìͬ£º
Boolean
 False < True
Ord(False) = 0
Ord(True) = 1
Succ(False) = True
Pred(True) = False
BoolToStr(True) = -1 //Õâ¸öº¯ÊýºÜ±ä̬
BoolToStr(False) = 0
ByteBool, WordBool, LongBool
False <> True
Ord(False) = 0
Ord(True) <> 0
Succ(False) = True
Pred(False) = True
BoolToStrÕâ¸öº¯Êý×îĪÃûÆäÃîÁË£¬Ã÷Ã÷˵TrueµÄÖµÊÇ1£¬¶øËüÈ´¸æËßÎÒÃÇTrueÊÇ-1¡£º¯ÊýµÄÔ­ÐÎÊÇ£º
function BoolToStr(B: Boolean; UseBoolStrs: Boolean = False): string;
ÏÂÃæÕâ¸ö±íÊǺ¯ÊýµÄת»»¹æÔò£º
B UseBoolStrs Value of returned string
True False '-1'
True True TrueBoolStrsÊý×éµÄµÚÒ»¸öÖµ(default, 'TRUE')
False False '0'
False True FalseBoolStrsÊý×éµÄµÚÒ»¸öÖµ(default, 'FALSE')


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delphi virtual dynamic

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Delphi ÁгöĿ¼ÏµÄÎļþ

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 ......
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