5.2.htm

RUBY的参考手册~~ RUBY的参考手册~~RUBY的参考手册

                <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=0&amp;c=1&amp;u=1&amp;srchText="><IMG 
                  height=9 src="5.2.files/sign_plus.gif" width=14 vspace=2 
                  border=0></A></TD>
                <TD class=v2 vAlign=top align=left width="100%" colSpan=14 
                height=18><A class=v2 title="Desktop Applications" 
                  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=dskapps&amp;s=1&amp;b=1&amp;f=1&amp;t=0&amp;c=1&amp;u=1&amp;srchText=">Desktop 
                  Applications</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=dpub&amp;s=1&amp;b=1&amp;f=1&amp;t=0&amp;c=1&amp;u=1&amp;srchText="><IMG 
                  height=9 src="5.2.files/sign_plus.gif" width=14 vspace=2 
                  border=0></A></TD>
                <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=0&amp;c=1&amp;u=1&amp;srchText=">Desktop 
                  Publishing</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=ecomm&amp;s=1&amp;b=1&amp;f=1&amp;t=0&amp;c=1&amp;u=1&amp;srchText="><IMG 
                  height=9 src="5.2.files/sign_plus.gif" width=14 vspace=2 
                  border=0></A></TD>
                <TD class=v2 vAlign=top align=left width="100%" colSpan=14 
                height=18><A class=v2 title=E-Commerce 
                  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=ecomm&amp;s=1&amp;b=1&amp;f=1&amp;t=0&amp;c=1&amp;u=1&amp;srchText=">E-Commerce</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=enter&amp;s=1&amp;b=1&amp;f=1&amp;t=0&amp;c=1&amp;u=1&amp;srchText="><IMG 
                  height=9 src="5.2.files/sign_plus.gif" width=14 vspace=2 
                  border=0></A></TD>
                <TD class=v2 vAlign=top align=left width="100%" colSpan=14 
                height=18><A class=v2 title="Enterprise Computing" 
                  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=enter&amp;s=1&amp;b=1&amp;f=1&amp;t=0&amp;c=1&amp;u=1&amp;srchText=">Enterprise 
                  Computing</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=graphics&amp;s=1&amp;b=1&amp;f=1&amp;t=0&amp;c=1&amp;u=1&amp;srchText="><IMG 
                  height=9 src="5.2.files/sign_plus.gif" width=14 vspace=2 
                  border=0></A></TD>
                <TD class=v2 vAlign=top align=left width="100%" colSpan=14 
                height=18><A class=v2 title=Graphics 
                  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=graphics&amp;s=1&amp;b=1&amp;f=1&amp;t=0&amp;c=1&amp;u=1&amp;srchText=">Graphics</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=hware&amp;s=1&amp;b=1&amp;f=1&amp;t=0&amp;c=1&amp;u=1&amp;srchText="><IMG 
                  height=9 src="5.2.files/sign_plus.gif" width=14 vspace=2 
                  border=0></A></TD>
                <TD class=v2 vAlign=top align=left width="100%" colSpan=14 
                height=18><A class=v2 title=Hardware 
                  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=hware&amp;s=1&amp;b=1&amp;f=1&amp;t=0&amp;c=1&amp;u=1&amp;srchText=">Hardware</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=humcomp&amp;s=1&amp;b=1&amp;f=1&amp;t=0&amp;c=1&amp;u=1&amp;srchText="><IMG 
                  height=9 src="5.2.files/sign_plus.gif" width=14 vspace=2 
                  border=0></A></TD>
                <TD class=v2 vAlign=top align=left width="100%" colSpan=14 
                height=18><A class=v2 title="Human-Computer Interaction" 
                  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=humcomp&amp;s=1&amp;b=1&amp;f=1&amp;t=0&amp;c=1&amp;u=1&amp;srchText=">Human-Computer 
                  Interaction</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=inet&amp;s=1&amp;b=1&amp;f=1&amp;t=0&amp;c=1&amp;u=1&amp;srchText="><IMG 
                  height=9 src="5.2.files/sign_plus.gif" width=14 vspace=2 
                  border=0></A></TD>
                <TD class=v2 vAlign=top align=left width="100%" colSpan=14 
                height=18><A class=v2 title=Internet/Online 
                  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=inet&amp;s=1&amp;b=1&amp;f=1&amp;t=0&amp;c=1&amp;u=1&amp;srchText=">Internet/Online</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=itmgmt&amp;s=1&amp;b=1&amp;f=1&amp;t=0&amp;c=1&amp;u=1&amp;srchText="><IMG 
                  height=9 src="5.2.files/sign_plus.gif" width=14 vspace=2 
                  border=0></A></TD>
                <TD class=v2 vAlign=top align=left width="100%" colSpan=14 
                height=18><A class=v2 title="IT Management" 
                  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=itmgmt&amp;s=1&amp;b=1&amp;f=1&amp;t=0&amp;c=1&amp;u=1&amp;srchText=">IT 
                  Management</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=markup&amp;s=1&amp;b=1&amp;f=1&amp;t=0&amp;c=1&amp;u=1&amp;srchText="><IMG 
                  height=9 src="5.2.files/sign_plus.gif" width=14 vspace=2 
                  border=0></A></TD>
                <TD class=v2 vAlign=top align=left width="100%" colSpan=14 
                height=18><A class=v2 title="Markup Languages" 
                  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=markup&amp;s=1&amp;b=1&amp;f=1&amp;t=0&amp;c=1&amp;u=1&amp;srchText=">Markup 
                  Languages</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=multi&amp;s=1&amp;b=1&amp;f=1&amp;t=0&amp;c=1&amp;u=1&amp;srchText="><IMG 
                  height=9 src="5.2.files/sign_plus.gif" width=14 vspace=2 
                  border=0></A></TD>
                <TD class=v2 vAlign=top align=left width="100%" colSpan=14 
                height=18><A class=v2 title=Multimedia 
                  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=multi&amp;s=1&amp;b=1&amp;f=1&amp;t=0&amp;c=1&amp;u=1&amp;srchText=">Multimedia</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=network&amp;s=1&amp;b=1&amp;f=1&amp;t=0&amp;c=1&amp;u=1&amp;srchText="><IMG 
                  height=9 src="5.2.files/sign_plus.gif" width=14 vspace=2 
                  border=0></A></TD>
                <TD class=v2 vAlign=top align=left width="100%" colSpan=14 
                height=18><A class=v2 title=Networking 
                  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=network&amp;s=1&amp;b=1&amp;f=1&amp;t=0&amp;c=1&amp;u=1&amp;srchText=">Networking</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=opsys&amp;s=1&amp;b=1&amp;f=1&amp;t=0&amp;c=1&amp;u=1&amp;srchText="><IMG 
                  height=9 src="5.2.files/sign_plus.gif" width=14 vspace=2 
                  border=0></A></TD>
                <TD class=v2 vAlign=top align=left width="100%" colSpan=14 
                height=18><A class=v2 title="Operating Systems" 
                  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=opsys&amp;s=1&amp;b=1&amp;f=1&amp;t=0&amp;c=1&amp;u=1&amp;srchText=">Operating 
                  Systems</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=prog&amp;s=1&amp;b=1&amp;f=1&amp;t=0&amp;c=1&amp;u=1&amp;srchText="><IMG 
                  height=9 src="5.2.files/sign_plus.gif" width=14 vspace=2 
                  border=0></A></TD>
                <TD class=v2 vAlign=top align=left width="100%" colSpan=14 
                height=18><A class=v2 title=Programming 
                  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=prog&amp;s=1&amp;b=1&amp;f=1&amp;t=0&amp;c=1&amp;u=1&amp;srchText=">Programming</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=sweng&amp;s=1&amp;b=1&amp;f=1&amp;t=0&amp;c=1&amp;u=1&amp;srchText="><IMG 
                  height=9 src="5.2.files/sign_plus.gif" width=14 vspace=2 
                  border=0></A></TD>
                <TD class=v2 vAlign=top align=left width="100%" colSpan=14 
                height=18><A class=v2 title="Software Engineering" 
                  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=sweng&amp;s=1&amp;b=1&amp;f=1&amp;t=0&amp;c=1&amp;u=1&amp;srchText=">Software 
                  Engineering</A></TD></TR>
              <TR>
                <TD class=v1 colSpan=16 height=10></TD></TR></TBODY></TABLE><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-SECT-2&amp;open=false&amp;catid=&amp;s=1&amp;b=1&amp;f=0&amp;t=0&amp;c=1&amp;u=1"><IMG 
            src="5.2.files/left_findbook.gif" border=0></A><BR>
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                <TD class=v2 height=18>&#8226; <A class=v2 
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