📄 20.mht
字号:
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width=3D514=20
border=3D0></P>
<P>=E8=AE=BF=E9=97=AE=E8=80=85=E6=A8=A1=E5=BC=8F=E6=B6=89=E5=8F=8A=E5=88=B0=
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=92=E8=89=B2=E3=80=82</P>
<UL>
<LI><FONT=20
=
color=3D#000080>=E6=8A=BD=E8=B1=A1=E8=AE=BF=E9=97=AE=E8=80=85=EF=BC=88Vis=
itor=EF=BC=89=E8=A7=92=E8=89=B2</FONT>=EF=BC=9A=E5=A3=B0=E6=98=8E=E4=BA=86=
=E4=B8=80=E4=B8=AA=E6=88=96=E8=80=85=E5=A4=9A=E4=B8=AA=E8=AE=BF=E9=97=AE=E6=
=93=8D=E4=BD=9C=EF=BC=8C=E5=BD=A2=E6=88=90=E6=89=80=E6=9C=89=E7=9A=84=E5=85=
=B7=E4=BD=93=E5=85=83=E7=B4=A0=E8=A7=92=E8=89=B2=E5=BF=85=E9=A1=BB=E5=AE=9E=
=E7=8E=B0=E7=9A=84=E6=8E=A5=E5=8F=A3=E3=80=82=20
<LI><FONT=20
=
color=3D#000080>=E5=85=B7=E4=BD=93=E8=AE=BF=E9=97=AE=E8=80=85=EF=BC=88Con=
creteVisitor=EF=BC=89=E8=A7=92=E8=89=B2</FONT>=EF=BC=9A=E5=AE=9E=E7=8E=B0=
=E6=8A=BD=E8=B1=A1=E8=AE=BF=E9=97=AE=E8=80=85=E8=A7=92=E8=89=B2=E6=89=80=E5=
=A3=B0=E6=98=8E=E7=9A=84=E6=8E=A5=E5=8F=A3=EF=BC=8C=E4=B9=9F=E5=B0=B1=E6=98=
=AF=E6=8A=BD=E8=B1=A1=E8=AE=BF=E9=97=AE=E8=80=85=E6=89=80=E5=A3=B0=E6=98=8E=
=E7=9A=84=E5=90=84=E4=B8=AA=E8=AE=BF=E9=97=AE=E6=93=8D=E4=BD=9C=E3=80=82 =
<LI><FONT =
color=3D#000080>=E6=8A=BD=E8=B1=A1=E8=8A=82=E7=82=B9=EF=BC=88Node=EF=BC=89=
=E8=A7=92=E8=89=B2</FONT>=EF=BC=9A=E5=A3=B0=E6=98=8E=E4=B8=80=E4=B8=AA=E6=
=8E=A5=E5=8F=97=E6=93=8D=E4=BD=9C=EF=BC=8C=E6=8E=A5=E5=8F=97=E4=B8=80=E4=B8=
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=E4=B8=AA=E5=8F=82=E9=87=8F=E3=80=82=20
<LI><FONT =
color=3D#000080>=E5=85=B7=E4=BD=93=E8=8A=82=E7=82=B9=EF=BC=88Node=EF=BC=89=
=E8=A7=92=E8=89=B2</FONT>=EF=BC=9A=E5=AE=9E=E7=8E=B0=E4=BA=86=E6=8A=BD=E8=
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<LI><FONT=20
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color=3D#000080>=E7=BB=93=E6=9E=84=E5=AF=B9=E8=B1=A1=EF=BC=88ObiectStruct=
ure=EF=BC=89=E8=A7=92=E8=89=B2</FONT>=EF=BC=9A=E6=9C=89=E5=A6=82=E4=B8=8B=
=E7=9A=84=E4=B8=80=E4=BA=9B=E8=B4=A3=E4=BB=BB=EF=BC=8C=E5=8F=AF=E4=BB=A5=E9=
=81=8D=E5=8E=86=E7=BB=93=E6=9E=84=E4=B8=AD=E7=9A=84=E6=89=80=E6=9C=89=E5=85=
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=80=82</LI></UL>
<H2><BR>=E4=B8=89=E3=80=81 =E7=A4=BA=E6=84=8F=E6=80=A7=E6=BA=90=E4=BB=
=A3=E7=A0=81</H2>
<P></P>
<DIV=20
style=3D"BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; =
BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; BACKGROUND: =
#e6e6e6; PADDING-BOTTOM: 4px; BORDER-LEFT: windowtext 0.5pt solid; =
WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: =
windowtext 0.5pt solid">
<DIV><IMG =
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/None.gif"=20
align=3Dtop><SPAN style=3D"COLOR: #008000">//</SPAN><SPAN=20
style=3D"COLOR: =
#008000"> Visitor pattern -- Structural example&=
nbsp; </SPAN><SPAN=20
style=3D"COLOR: #008000"><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/None.gif"=20
align=3Dtop></SPAN><SPAN style=3D"COLOR: #0000ff">using</SPAN><SPAN=20
style=3D"COLOR: #000000"> System;<BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/None.gif"=20
align=3Dtop></SPAN><SPAN style=3D"COLOR: #0000ff">using</SPAN><SPAN=20
style=3D"COLOR: #000000"> System.Collections;<BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/None.gif"=20
align=3Dtop><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/None.gif"=20
align=3Dtop></SPAN><SPAN style=3D"COLOR: #008000">//</SPAN><SPAN=20
style=3D"COLOR: #008000"> "Visitor"</SPAN><SPAN=20
style=3D"COLOR: #008000"><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/None.gif"=20
align=3Dtop></SPAN><SPAN style=3D"COLOR: #0000ff">abstract</SPAN><SPAN=20
style=3D"COLOR: #000000"> </SPAN><SPAN=20
style=3D"COLOR: #0000ff">class</SPAN><SPAN=20
style=3D"COLOR: #000000"> Visitor<BR><IMG=20
id=3DCodehighlighter1_120_309_Open_Image=20
onclick=3D"this.style.display=3D'none'; =
Codehighlighter1_120_309_Open_Text.style.display=3D'none'; =
Codehighlighter1_120_309_Closed_Image.style.display=3D'inline'; =
Codehighlighter1_120_309_Closed_Text.style.display=3D'inline';"=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockSta=
rt.gif"=20
align=3Dtop><IMG id=3DCodehighlighter1_120_309_Closed_Image =
style=3D"DISPLAY: none"=20
onclick=3D"this.style.display=3D'none'; =
Codehighlighter1_120_309_Closed_Text.style.display=3D'none'; =
Codehighlighter1_120_309_Open_Image.style.display=3D'inline'; =
Codehighlighter1_120_309_Open_Text.style.display=3D'inline';"=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ContractedBlock.=
gif"=20
align=3Dtop></SPAN><SPAN id=3DCodehighlighter1_120_309_Closed_Text=20
style=3D"BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; =
DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 =
1px solid; BACKGROUND-COLOR: #ffffff"><IMG=20
src=3D"http://www.cnblogs.com/Images/dot.gif"></SPAN><SPAN=20
id=3DCodehighlighter1_120_309_Open_Text><SPAN style=3D"COLOR: =
#000000">{<BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop> </SPAN><SPAN style=3D"COLOR: =
#008000">//</SPAN><SPAN=20
style=3D"COLOR: #008000"> Methods</SPAN><SPAN style=3D"COLOR: =
#008000"><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop></SPAN><SPAN style=3D"COLOR: =
#000000"> </SPAN><SPAN=20
style=3D"COLOR: #0000ff">abstract</SPAN><SPAN=20
style=3D"COLOR: #000000"> </SPAN><SPAN=20
style=3D"COLOR: #0000ff">public</SPAN><SPAN=20
style=3D"COLOR: #000000"> </SPAN><SPAN=20
style=3D"COLOR: #0000ff">void</SPAN><SPAN=20
style=3D"COLOR: #000000"> VisitConcreteElementA(<BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop> ConcreteElementA concreteElement=
A );<BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop> </SPAN><SPAN style=3D"COLOR: =
#0000ff">abstract</SPAN><SPAN=20
style=3D"COLOR: #000000"> </SPAN><SPAN=20
style=3D"COLOR: #0000ff">public</SPAN><SPAN=20
style=3D"COLOR: #000000"> </SPAN><SPAN=20
style=3D"COLOR: #0000ff">void</SPAN><SPAN=20
style=3D"COLOR: #000000"> VisitConcreteElementB(<BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop> ConcreteElementB concreteElement=
B );<BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd=
.gif"=20
align=3Dtop>}</SPAN></SPAN><SPAN style=3D"COLOR: #000000"><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/None.gif"=20
align=3Dtop><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/None.gif"=20
align=3Dtop></SPAN><SPAN style=3D"COLOR: #008000">//</SPAN><SPAN=20
style=3D"COLOR: #008000"> "ConcreteVisitor1"</SPAN><SPAN=20
style=3D"COLOR: #008000"><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/None.gif"=20
align=3Dtop></SPAN><SPAN style=3D"COLOR: #0000ff">class</SPAN><SPAN=20
style=3D"COLOR: =
#000000"> ConcreteVisitor1 : Visitor<BR><IMG=20
id=3DCodehighlighter1_367_725_Open_Image=20
onclick=3D"this.style.display=3D'none'; =
Codehighlighter1_367_725_Open_Text.style.display=3D'none'; =
Codehighlighter1_367_725_Closed_Image.style.display=3D'inline'; =
Codehighlighter1_367_725_Closed_Text.style.display=3D'inline';"=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockSta=
rt.gif"=20
align=3Dtop><IMG id=3DCodehighlighter1_367_725_Closed_Image =
style=3D"DISPLAY: none"=20
onclick=3D"this.style.display=3D'none'; =
Codehighlighter1_367_725_Closed_Text.style.display=3D'none'; =
Codehighlighter1_367_725_Open_Image.style.display=3D'inline'; =
Codehighlighter1_367_725_Open_Text.style.display=3D'inline';"=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ContractedBlock.=
gif"=20
align=3Dtop></SPAN><SPAN id=3DCodehighlighter1_367_725_Closed_Text=20
style=3D"BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; =
DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 =
1px solid; BACKGROUND-COLOR: #ffffff"><IMG=20
src=3D"http://www.cnblogs.com/Images/dot.gif"></SPAN><SPAN=20
id=3DCodehighlighter1_367_725_Open_Text><SPAN style=3D"COLOR: =
#000000">{<BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop> </SPAN><SPAN style=3D"COLOR: =
#008000">//</SPAN><SPAN=20
style=3D"COLOR: #008000"> Methods</SPAN><SPAN style=3D"COLOR: =
#008000"><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop></SPAN><SPAN style=3D"COLOR: =
#000000"> </SPAN><SPAN=20
style=3D"COLOR: #0000ff">override</SPAN><SPAN=20
style=3D"COLOR: #000000"> </SPAN><SPAN=20
style=3D"COLOR: #0000ff">public</SPAN><SPAN=20
style=3D"COLOR: #000000"> </SPAN><SPAN=20
style=3D"COLOR: #0000ff">void</SPAN><SPAN=20
style=3D"COLOR: #000000"> VisitConcreteElementA(<BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop> ConcreteElementA concreteElement=
A )<BR><IMG=20
id=3DCodehighlighter1_470_551_Open_Image=20
onclick=3D"this.style.display=3D'none'; =
Codehighlighter1_470_551_Open_Text.style.display=3D'none'; =
Codehighlighter1_470_551_Closed_Image.style.display=3D'inline'; =
Codehighlighter1_470_551_Closed_Text.style.display=3D'inline';"=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlock=
Start.gif"=20
align=3Dtop><IMG id=3DCodehighlighter1_470_551_Closed_Image =
style=3D"DISPLAY: none"=20
onclick=3D"this.style.display=3D'none'; =
Codehighlighter1_470_551_Closed_Text.style.display=3D'none'; =
Codehighlighter1_470_551_Open_Image.style.display=3D'inline'; =
Codehighlighter1_470_551_Open_Text.style.display=3D'inline';"=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlo=
ck.gif"=20
align=3Dtop> </SPAN><SPAN =
id=3DCodehighlighter1_470_551_Closed_Text=20
style=3D"BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; =
DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 =
1px solid; BACKGROUND-COLOR: #ffffff"><IMG=20
src=3D"http://www.cnblogs.com/Images/dot.gif"></SPAN><SPAN=20
id=3DCodehighlighter1_470_551_Open_Text><SPAN style=3D"COLOR: =
#000000">{<BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop> Console.WriteLine( </SPAN><SPAN =
style=3D"COLOR: #000000">"</SPAN><SPAN=20
style=3D"COLOR: #000000">{0} visited by {1}</SPAN><SPAN=20
style=3D"COLOR: #000000">"</SPAN><SPAN style=3D"COLOR: =
#000000">,<BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop> concreteElementA, </=
SPAN><SPAN=20
style=3D"COLOR: #0000ff">this</SPAN><SPAN style=3D"COLOR: =
#000000"> );<BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlock=
End.gif"=20
align=3Dtop> }</SPAN></SPAN><SPAN style=3D"COLOR: =
#000000"><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop> </SPAN><SPAN style=3D"COLOR: =
#0000ff">override</SPAN><SPAN=20
style=3D"COLOR: #000000"> </SPAN><SPAN=20
style=3D"COLOR: #0000ff">public</SPAN><SPAN=20
style=3D"COLOR: #000000"> </SPAN><SPAN=20
style=3D"COLOR: #0000ff">void</SPAN><SPAN=20
style=3D"COLOR: #000000"> VisitConcreteElementB(<BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop> ConcreteElementB concreteElement=
B )<BR><IMG=20
id=3DCodehighlighter1_642_723_Open_Image=20
onclick=3D"this.style.display=3D'none'; =
Codehighlighter1_642_723_Open_Text.style.display=3D'none'; =
Codehighlighter1_642_723_Closed_Image.style.display=3D'inline'; =
Codehighlighter1_642_723_Closed_Text.style.display=3D'inline';"=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlock=
Start.gif"=20
align=3Dtop><IMG id=3DCodehighlighter1_642_723_Closed_Image =
style=3D"DISPLAY: none"=20
onclick=3D"this.style.display=3D'none'; =
Codehighlighter1_642_723_Closed_Text.style.display=3D'none'; =
Codehighlighter1_642_723_Open_Image.style.display=3D'inline'; =
Codehighlighter1_642_723_Open_Text.style.display=3D'inline';"=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlo=
ck.gif"=20
align=3Dtop> </SPAN><SPAN =
id=3DCodehighlighter1_642_723_Closed_Text=20
style=3D"BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; =
DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 =
1px solid; BACKGROUND-COLOR: #ffffff"><IMG=20
src=3D"http://www.cnblogs.com/Images/dot.gif"></SPAN><SPAN=20
id=3DCodehighlighter1_642_723_Open_Text><SPAN style=3D"COLOR: =
#000000">{<BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop> Console.WriteLine( </SPAN><SPAN =
style=3D"COLOR: #000000">"</SPAN><SPAN=20
style=3D"COLOR: #000000">{0} visited by {1}</SPAN><SPAN=20
style=3D"COLOR: #000000">"</SPAN><SPAN style=3D"COLOR: =
#000000">,<BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop> concreteElementB, </=
SPAN><SPAN=20
style=3D"COLOR: #0000ff">this</SPAN><SPAN style=3D"COLOR: =
#000000"> );<BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlock=
End.gif"=20
align=3Dtop> }</SPAN></SPAN><SPAN style=3D"COLOR: =
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