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RUBY的参考手册~~ RUBY的参考手册~~RUBY的参考手册

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                <TD class=v2 colSpan=14><A class=v2 title=Literals 
                  href="http://proquest.safaribooksonline.com/JVXSL.asp?x=1&amp;mode=section&amp;sortKey=title&amp;sortOrder=asc&amp;view=&amp;xmlid=0-59600-214-9/ruby-CHP-2-SECT-4&amp;open=true&amp;catid=&amp;s=1&amp;b=1&amp;f=1&amp;t=1&amp;c=1&amp;u=1&amp;srchText=">Literals</A></TD></TR>
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                <TD class=v2>&nbsp;</TD>
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                <TD class=v2 colSpan=14><A class=v2 title=Variables 
                  href="http://proquest.safaribooksonline.com/JVXSL.asp?x=1&amp;mode=section&amp;sortKey=title&amp;sortOrder=asc&amp;view=&amp;xmlid=0-59600-214-9/ruby-CHP-2-SECT-5&amp;open=true&amp;catid=&amp;s=1&amp;b=1&amp;f=1&amp;t=1&amp;c=1&amp;u=1&amp;srchText=">Variables</A></TD></TR>
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                <TD class=v2>&nbsp;</TD>
                <TD class=v2 width=14 height=18><IMG height=9 
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                <TD class=v2 colSpan=14><A class=v2 title=Operators 
                  href="http://proquest.safaribooksonline.com/JVXSL.asp?x=1&amp;mode=section&amp;sortKey=title&amp;sortOrder=asc&amp;view=&amp;xmlid=0-59600-214-9/ruby-CHP-2-SECT-6&amp;open=true&amp;catid=&amp;s=1&amp;b=1&amp;f=1&amp;t=1&amp;c=1&amp;u=1&amp;srchText=">Operators</A></TD></TR>
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                <TD class=v2>&nbsp;</TD>
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                <TD class=v2 colSpan=14><A class=v2 title=Methods 
                  href="http://proquest.safaribooksonline.com/JVXSL.asp?x=1&amp;mode=section&amp;sortKey=title&amp;sortOrder=asc&amp;view=&amp;xmlid=0-59600-214-9/ruby-CHP-2-SECT-7&amp;open=true&amp;catid=&amp;s=1&amp;b=1&amp;f=1&amp;t=1&amp;c=1&amp;u=1&amp;srchText=">Methods</A></TD></TR>
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                <TD class=v2 colSpan=14><A class=v4 title="Control Structures" 
                  href="http://proquest.safaribooksonline.com/JVXSL.asp?x=1&amp;mode=section&amp;sortKey=title&amp;sortOrder=asc&amp;view=&amp;xmlid=0-59600-214-9/ruby-CHP-2-SECT-8&amp;open=true&amp;catid=&amp;s=1&amp;b=1&amp;f=1&amp;t=1&amp;c=1&amp;u=1&amp;srchText=">Control 
                  Structures</A></TD></TR>
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                <TD class=v2 colSpan=14><A class=v2 
                  title=" Object-Oriented Programming" 
                  href="http://proquest.safaribooksonline.com/JVXSL.asp?x=1&amp;mode=section&amp;sortKey=title&amp;sortOrder=asc&amp;view=&amp;xmlid=0-59600-214-9/ruby-CHP-2-SECT-9&amp;open=true&amp;catid=&amp;s=1&amp;b=1&amp;f=1&amp;t=1&amp;c=1&amp;u=1&amp;srchText=">Object-Oriented 
                  Programming</A></TD></TR>
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                <TD class=v2>&nbsp;</TD>
                <TD class=v2 width=14 height=18><IMG height=9 
                  src="2.8.files/left_note.gif" width=14 vspace=4 border=0></TD>
                <TD class=v2 colSpan=14><A class=v2 title=Security 
                  href="http://proquest.safaribooksonline.com/JVXSL.asp?x=1&amp;mode=section&amp;sortKey=title&amp;sortOrder=asc&amp;view=&amp;xmlid=0-59600-214-9/ruby-CHP-2-SECT-10&amp;open=true&amp;catid=&amp;s=1&amp;b=1&amp;f=1&amp;t=1&amp;c=1&amp;u=1&amp;srchText=">Security</A></TD></TR>
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                <TD class=v2 colSpan=15><A class=v2 
                  title="Built-in Library Reference" 
                  href="http://proquest.safaribooksonline.com/JVXSL.asp?x=1&amp;mode=section&amp;sortKey=title&amp;sortOrder=asc&amp;view=&amp;xmlid=0-59600-214-9/ruby-CHP-3&amp;open=true&amp;catid=&amp;s=1&amp;b=1&amp;f=1&amp;t=1&amp;c=1&amp;u=1&amp;srchText=">Built-in 
                  Library Reference</A></TD></TR>
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                <TD class=v2 width=14 height=18><A 
                  href="http://proquest.safaribooksonline.com/JVXSL.asp?x=1&amp;mode=section&amp;sortKey=title&amp;sortOrder=asc&amp;view=&amp;xmlid=0-59600-214-9/ruby-CHP-4&amp;open=true&amp;catid=&amp;s=1&amp;b=1&amp;f=1&amp;t=1&amp;c=1&amp;u=1&amp;srchText="><IMG 
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                  border=0></A></TD>
                <TD class=v2 colSpan=15><A class=v2 
                  title="Standard Library Reference" 
                  href="http://proquest.safaribooksonline.com/JVXSL.asp?x=1&amp;mode=section&amp;sortKey=title&amp;sortOrder=asc&amp;view=&amp;xmlid=0-59600-214-9/ruby-CHP-4&amp;open=true&amp;catid=&amp;s=1&amp;b=1&amp;f=1&amp;t=1&amp;c=1&amp;u=1&amp;srchText=">Standard 
                  Library Reference</A></TD></TR>
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                <TD class=v2 width=14 height=18><A 
                  href="http://proquest.safaribooksonline.com/JVXSL.asp?x=1&amp;mode=section&amp;sortKey=title&amp;sortOrder=asc&amp;view=&amp;xmlid=0-59600-214-9/ruby-CHP-5&amp;open=true&amp;catid=&amp;s=1&amp;b=1&amp;f=1&amp;t=1&amp;c=1&amp;u=1&amp;srchText="><IMG 
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                  border=0></A></TD>
                <TD class=v2 colSpan=15><A class=v2 title="Ruby Tools" 
                  href="http://proquest.safaribooksonline.com/JVXSL.asp?x=1&amp;mode=section&amp;sortKey=title&amp;sortOrder=asc&amp;view=&amp;xmlid=0-59600-214-9/ruby-CHP-5&amp;open=true&amp;catid=&amp;s=1&amp;b=1&amp;f=1&amp;t=1&amp;c=1&amp;u=1&amp;srchText=">Ruby 
                  Tools</A></TD></TR>
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                  border=0></A></TD>
                <TD class=v2 colSpan=15><A class=v2 title="Ruby Updates" 
                  href="http://proquest.safaribooksonline.com/JVXSL.asp?x=1&amp;mode=section&amp;sortKey=title&amp;sortOrder=asc&amp;view=&amp;xmlid=0-59600-214-9/ruby-CHP-6&amp;open=true&amp;catid=&amp;s=1&amp;b=1&amp;f=1&amp;t=1&amp;c=1&amp;u=1&amp;srchText=">Ruby 
                  Updates</A></TD></TR>
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                <TD class=v2 colSpan=15><A class=v2 title=Colophon 
                  href="http://proquest.safaribooksonline.com/JVXSL.asp?x=1&amp;mode=section&amp;sortKey=title&amp;sortOrder=asc&amp;view=&amp;xmlid=0-59600-214-9/colophon&amp;open=true&amp;catid=&amp;s=1&amp;b=1&amp;f=1&amp;t=1&amp;c=1&amp;u=1&amp;srchText=">Colophon</A></TD></TR>
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                <TD class=v2 colSpan=15><A class=v2 title=Index 
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                  height=20>&nbsp;<A class=v1 
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                  All Titles</A>&nbsp;&nbsp;</TD></TR>
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                  href="http://proquest.safaribooksonline.com/JVXSL.asp?x=1&amp;mode=section&amp;sortKey=title&amp;sortOrder=asc&amp;view=&amp;xmlid=&amp;open=true&amp;catid=appsci&amp;s=1&amp;b=1&amp;f=1&amp;t=1&amp;c=1&amp;u=1&amp;srchText="><IMG 
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                <TD class=v2 vAlign=top align=left width="100%" colSpan=14 
                height=18><A class=v2 title="Applied Sciences" 
                  href="http://proquest.safaribooksonline.com/JVXSL.asp?x=1&amp;mode=books&amp;sortKey=title&amp;sortOrder=asc&amp;view=&amp;xmlid=&amp;open=true&amp;catid=appsci&amp;s=1&amp;b=1&amp;f=1&amp;t=1&amp;c=1&amp;u=1&amp;srchText=">Applied 
                  Sciences</A></TD></TR>
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                <TD class=v2>&nbsp;</TD>
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                  href="http://proquest.safaribooksonline.com/JVXSL.asp?x=1&amp;mode=section&amp;sortKey=title&amp;sortOrder=asc&amp;view=&amp;xmlid=&amp;open=true&amp;catid=artint&amp;s=1&amp;b=1&amp;f=1&amp;t=1&amp;c=1&amp;u=1&amp;srchText="><IMG 
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                  border=0></A></TD>
                <TD class=v2 vAlign=top align=left width="100%" colSpan=14 
                height=18><A class=v2 title="Artificial Intelligence" 
                  href="http://proquest.safaribooksonline.com/JVXSL.asp?x=1&amp;mode=books&amp;sortKey=title&amp;sortOrder=asc&amp;view=&amp;xmlid=&amp;open=true&amp;catid=artint&amp;s=1&amp;b=1&amp;f=1&amp;t=1&amp;c=1&amp;u=1&amp;srchText=">Artificial 
                  Intelligence</A></TD></TR>
              <TR vAlign=top>
                <TD class=v2>&nbsp;</TD>
                <TD class=v2 vAlign=center align=left width=14 height=18><A 
                  href="http://proquest.safaribooksonline.com/JVXSL.asp?x=1&amp;mode=section&amp;sortKey=title&amp;sortOrder=asc&amp;view=&amp;xmlid=&amp;open=true&amp;catid=bus&amp;s=1&amp;b=1&amp;f=1&amp;t=1&amp;c=1&amp;u=1&amp;srchText="><IMG 
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                height=18><A class=v2 title=Business 
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                <TD class=v2>&nbsp;</TD>
                <TD class=v2 vAlign=center align=left width=14 height=18><A 
                  href="http://proquest.safaribooksonline.com/JVXSL.asp?x=1&amp;mode=section&amp;sortKey=title&amp;sortOrder=asc&amp;view=&amp;xmlid=&amp;open=true&amp;catid=cert&amp;s=1&amp;b=1&amp;f=1&amp;t=1&amp;c=1&amp;u=1&amp;srchText="><IMG 
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                <TD class=v2 vAlign=top align=left width="100%" colSpan=14 
                height=18><A class=v2 title=Certification 
                  href="http://proquest.safaribooksonline.com/JVXSL.asp?x=1&amp;mode=books&amp;sortKey=title&amp;sortOrder=asc&amp;view=&amp;xmlid=&amp;open=true&amp;catid=cert&amp;s=1&amp;b=1&amp;f=1&amp;t=1&amp;c=1&amp;u=1&amp;srchText=">Certification</A></TD></TR>
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                <TD class=v2>&nbsp;</TD>
                <TD class=v2 vAlign=center align=left width=14 height=18><A 
                  href="http://proquest.safaribooksonline.com/JVXSL.asp?x=1&amp;mode=section&amp;sortKey=title&amp;sortOrder=asc&amp;view=&amp;xmlid=&amp;open=true&amp;catid=dbase&amp;s=1&amp;b=1&amp;f=1&amp;t=1&amp;c=1&amp;u=1&amp;srchText="><IMG 
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                height=18><A class=v2 title=Databases 
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                <TD class=v2>&nbsp;</TD>
                <TD class=v2 vAlign=center align=left width=14 height=18><A 
                  href="http://proquest.safaribooksonline.com/JVXSL.asp?x=1&amp;mode=section&amp;sortKey=title&amp;sortOrder=asc&amp;view=&amp;xmlid=&amp;open=true&amp;catid=dskapps&amp;s=1&amp;b=1&amp;f=1&amp;t=1&amp;c=1&amp;u=1&amp;srchText="><IMG 
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                height=18><A class=v2 title="Desktop Applications" 
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                  Applications</A></TD></TR>
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                <TD class=v2>&nbsp;</TD>
                <TD class=v2 vAlign=center align=left width=14 height=18><A 
                  href="http://proquest.safaribooksonline.com/JVXSL.asp?x=1&amp;mode=section&amp;sortKey=title&amp;sortOrder=asc&amp;view=&amp;xmlid=&amp;open=true&amp;catid=dpub&amp;s=1&amp;b=1&amp;f=1&amp;t=1&amp;c=1&amp;u=1&amp;srchText="><IMG 
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                <TD class=v2 vAlign=top align=left width="100%" colSpan=14 
                height=18><A class=v2 title="Desktop Publishing" 
                  href="http://proquest.safaribooksonline.com/JVXSL.asp?x=1&amp;mode=books&amp;sortKey=title&amp;sortOrder=asc&amp;view=&amp;xmlid=&amp;open=true&amp;catid=dpub&amp;s=1&amp;b=1&amp;f=1&amp;t=1&amp;c=1&amp;u=1&amp;srchText=">Desktop