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<html><head><title>Index: Symbols & Numbers</title></head><body bgcolor="#FFFFFF" text="#000000"><!-- START OF BODY --><!-- TOP BANNER --><p><img src="../gifs/smbanns.gif" usemap="#banner-map" border=0 alt="Book Home" ></a></p><map name="banner-map"><area alt="Book Title" href="../index.htm" coords="1,-2,616,66" shape="rect"><area alt="Search this book" href="../jobjects/fsearch.htm" coords="629,-11,726,25" shape="rect"></map><!-- TOP INDEX LINKS --><p><a href="idx_0.htm">Symbols & Numbers</a>| <a href="idx_a.htm">A</a>| <a href="idx_b.htm">B</a>| <a href="idx_c.htm">C</a>| <a href="idx_d.htm">D</a>| <a href="idx_e.htm">E</a>| <a href="idx_f.htm">F</a>| <a href="idx_g.htm">G</a>| <a href="idx_h.htm">H</a>| <a href="idx_i.htm">I</a>| <a href="idx_j.htm">J</a>| <a href="idx_k.htm">K</a>| <a href="idx_l.htm">L</a>| <a href="idx_m.htm">M</a>| <a href="idx_n.htm">N</a>| <a href="idx_o.htm">O</a>| <a href="idx_p.htm">P</a>| <a href="idx_q.htm">Q</a>| <a href="idx_r.htm">R</a>| <a href="idx_s.htm">S</a>| <a href="idx_t.htm">T</a>| <a href="idx_u.htm">U</a>| <a href="idx_v.htm">V</a>| <a href="idx_w.htm">W</a>| <a href="idx_x.htm">X</a>| <a href="idx_y.htm">Y</a>| <a href="idx_z.htm">Z</a></FONT><!-- INDEX SECTION BODY --><H2>Index: Symbols & Numbers</H2><H3>Symbols</H3><DL><!-- ========================== --><a name="&-ampersand"><dt>& (ampersand)</dt><dd><dl> <a name="AND-bitwise-operator"> <dt>AND bitwise operator: <a href="../ch04_05.htm#INDEX-570">4.5.10. Bitwise Operators</a></dt> <a name="calling-subroutines"> <dt>calling subroutines: <a href="../ch04_07.htm#INDEX-709">4.7.1. Calling Subroutines</a></dt> <a name="in-encoded-URLs"> <dt>in encoded URLs: <a href="../ch09_02.htm#INDEX-1624">9.2. URL Encoding</a></dt> <a name="prototype-symbol"> <dt>prototype symbol: <a href="../ch04_07.htm#INDEX-735">4.7.5. Prototypes</a></dt> <a name="&&=-assignment-operator"> <dt>&&= (assignment) operator: <a href="../ch04_05.htm#INDEX-506">4.5.6. Assignment Operators</a></dt> <a name="&=-assignment-operator"> <dt>&= (assignment) operator: <a href="../ch04_05.htm#INDEX-504">4.5.6. Assignment Operators</a></dt> </dl></dd><!-- ========================== --><a name="<-->-angle-brackets"><dt><> (angle brackets)</dt><dd><dl> <a name="<=-->-comparison-operator"> <dt><=> (comparison) operator: <a href="../ch04_05.htm#INDEX-487">4.5.4.2. Equality operators</a></dt> <a name="<...-->-line-input-operator"> <dt><...> (line-input) operator: <a href="../ch04_09.htm#INDEX-775">4.9. Filehandles</a></dt> <a name="<<=-assignment-operator"> <dt><<= (assignment) operator: <a href="../ch04_05.htm#INDEX-508">4.5.6. Assignment Operators</a></dt> <a name="<<-debugger-commands-and"> <dt><< debugger commands, and: <a href="../ch06_02.htm#INDEX-1124">6.2. Debugger Commands</a></dt> <a name="<-less-than-operator"> <dt>< (less-than) operator: <a href="../ch04_05.htm#INDEX-470">4.5.4.1. Relational operators</a></dt> <a name="<=-less-than-or-equal-operator"> <dt><= (less-than-or-equal) operator: <a href="../ch04_05.htm#INDEX-478">4.5.4.1. Relational operators</a></dt> <a name="-->-->=-assignment-operator"> <dt>>>= (assignment) operator: <a href="../ch04_05.htm#INDEX-509">4.5.6. Assignment Operators</a></dt> <a name="-->-greater-than-operator"> <dt>> (greater-than) operator: <a href="../ch04_05.htm#INDEX-466">4.5.4.1. Relational operators</a></dt> <a name="-->=-greater-than-or-equal-operator"> <dt>>= (greater-than-or-equal) operator: <a href="../ch04_05.htm#INDEX-473">4.5.4.1. Relational operators</a></dt> <a name="-->-->-to-open-file-for-appending"> <dt>>> (to open file for appending): <a href="../ch04_09.htm#INDEX-771">4.9. Filehandles</a></dt> </dl></dd><!-- ========================== --><a name="*-asterisk"><dt>* (asterisk)</dt><dd><dl> <a name="multiplication-operator"> <dt>multiplication operator: <a href="../ch04_05.htm#INDEX-451">4.5.3. Arithmetic Operators</a></dt> <a name="prototype-symbol-typeglob"> <dt>prototype symbol (typeglob): <a href="../ch04_07.htm#INDEX-737">4.7.5. Prototypes</a></dt> <a name="regular-expression-metacharacter"> <dt>regular expression metacharacter: <a href="../ch04_06.htm#INDEX-626">4.6.2. Regular Expression Syntax</a></dt> <a name="**-exponentiation-operator"> <dt>** (exponentiation) operator: <a href="../ch04_05.htm#INDEX-448">4.5.3. Arithmetic Operators</a></dt> <a name="*=-assignment-operator"> <dt>*= (assignment) operator: <a href="../ch04_05.htm#INDEX-502">4.5.6. Assignment Operators</a></dt> </dl></dd><!-- ========================== --><a name="@-at-sign"><dt>@ (at sign)</dt><dd><dl> <a name="@_-array"> <dt>@_ array: <a href="../ch04_07.htm#INDEX-714">4.7.2. Passing Arguments</a></dt> <a name="dereferencing-with"> <dt>dereferencing with: <a href="../ch04_08.htm#INDEX-755">4.8.2. Dereferencing</a></dt> <a name="format-fieldholders"> <dt>format fieldholders: <a href="../ch04_12.htm#INDEX-800">4.12. Formats</a></dt> <a name="prototype-symbol-list"> <dt>prototype symbol (list): <a href="../ch04_07.htm#INDEX-731">4.7.5. Prototypes</a></dt> <a name="signifying-arrays"> <dt>signifying arrays: <a href="../ch04_02.htm#INDEX-245">4.2.5.1. Arrays</a></dt> </dl></dd><!-- ========================== --><a name="-----backslash"><dt> (backslash)</dt><dd><dl> <a name="creating-references"> <dt>creating references: <a href="../ch04_08.htm#INDEX-748">4.8.1. Creating References</a></dt> <a name="reference-creation-operator"> <dt>reference creation operator: <a href="../ch04_05.htm#INDEX-445">4.5.2. Unary Operators</a></dt> </dl></dd><!-- ========================== --><a name="!-bang"><dt>! (bang)</dt><dd><dl> <a name="!=-not-equal-to-operator"> <dt>!= (not equal to) operator: <a href="../ch04_05.htm#INDEX-483">4.5.4.2. Equality operators</a></dt> <a name="CPAN.pm-eval-command"> <dt>CPAN.pm eval command: <a href="../ch02_04.htm#INDEX-101">2.4.4. Installing Modules with the CPAN Module</a></dt> <a name="logical-negation-operator"> <dt>logical negation operator: <a href="../ch04_05.htm#INDEX-437">4.5.2. Unary Operators</a></dt> <a name="Perl-debugger-command"> <dt>Perl debugger command: <a href="../ch06_02.htm#INDEX-1130">6.2. Debugger Commands</a></dt> <a name="!!-Perl-debugger-command"> <dt>!! Perl debugger command: <a href="../ch06_02.htm#INDEX-1133">6.2. Debugger Commands</a></dt> </dl></dd><!-- ========================== --><a name="{}-braces"><dt>{} (braces)</dt><dd><dl> <a name="delimiting-statement-blocks"> <dt>delimiting statement blocks: <a href="../ch04_03.htm#INDEX-272">4.3. Statements</a></dt> <a name="regular-expression-quantifiers"> <dt>regular expression quantifiers: <a href="../ch04_06.htm#INDEX-689">4.6.6. Quantifiers</a></dt> <a name="{{-Perl-debugger-command"> <dt>{{ Perl debugger command: <a href="../ch06_02.htm#INDEX-1129">6.2. Debugger Commands</a></dt> <a name="{-Perl-debugger-command"> <dt>{ Perl debugger command: <a href="../ch06_02.htm#INDEX-1127">6.2. Debugger Commands</a></dt> </dl></dd><!-- ========================== --><a name="[]-brackets"><dt>[] (brackets)</dt><dd><dl> <a name="Perl-debugger-command"> <dt>Perl debugger command: <a href="../ch06_02.htm#INDEX-1139">6.2. Debugger Commands</a></dt> <a name="regular-expression-metacharacter"> <dt>regular expression metacharacter: <a href="../ch04_06.htm#INDEX-654">4.6.4. Character Classes</a></dt> </dl></dd><!-- ========================== --><a name="^-caret"><dt>^ (caret)</dt><dd><dl> <a name="in-[...]-construct"> <dt>in [...] construct: <a href="../ch04_06.htm#INDEX-661">4.6.4. Character Classes</a></dt> <a name="grid-geometry-manager-placeholder"> <dt>grid geometry manager placeholder: <a href="../ch21_02.htm#INDEX-2724">21.2.2. The grid Geometry Manager</a></dt> <a name="regular-expression-metacharacter"> <dt>regular expression metacharacter: <a href="../ch04_06.htm#INDEX-622">4.6.2. Regular Expression Syntax</a></dt> <a name="XOR-bitwise-operator"> <dt>XOR bitwise operator: <a href="../ch04_05.htm#INDEX-575">4.5.10. Bitwise Operators</a></dt> <a name="^=-assignment-operator"> <dt>^= (assignment) operator: <a href="../ch04_05.htm#INDEX-524">4.5.6. Assignment Operators</a></dt> </dl></dd><!-- ========================== --><a name="-:-colon"><dt>: (colon), <a name="in-package-names"> in package names: <a href="../ch07_01.htm#INDEX-1245">7.1. Namespaces and Packages</a></dt> <!-- ========================== --><a name="-comma"><dt>, (comma)</dt><dd><dl> <a name="number-legibility-without"> <dt>number legibility without: <a href="../ch04_02.htm#INDEX-224">4.2.1. Numbers</a></dt> <a name="operator"> <dt>operator: <a href="../ch04_05.htm#INDEX-585">4.5.11.3. Comma operator</a></dt> </dl></dd><!-- ========================== --><a name="$-dollar-sign"><dt>$ (dollar sign)</dt><dd><dl> <a name="dereferencing-with"> <dt>dereferencing with: <a href="../ch04_08.htm#INDEX-753">4.8.2. Dereferencing</a></dt> <a name="prototype-symbol-scalar"> <dt>prototype symbol (scalar): <a href="../ch04_07.htm#INDEX-729">4.7.5. Prototypes</a></dt> <a name="regular-expression-metacharacter"> <dt>regular expression metacharacter: <a href="../ch04_06.htm#INDEX-623">4.6.2. Regular Expression Syntax</a></dt> <a name="signifying-scalar-variables"> <dt>signifying scalar variables: <a href="../ch04_02.htm#INDEX-239">4.2.5. Variables</a></dt> </dl></dd><!-- ========================== --><a name="$-variables"><dt>$ variables</dt><dd><dl> <a name="$'-variable"> <dt>$' variable: <a href="../ch04_04.htm#INDEX-409">4.4.5. Regular Expression Special Variables</a></dt> <a name="$1-$2-$3-..."> <dt>$1, $2, $3, ...: <a href="../ch04_04.htm#INDEX-404">4.4.5. Regular Expression Special Variables</a></dt><dd><dl> <dt><a href="../ch04_06.htm#INDEX-694">4.6.7. Pattern Match Variables</a></dt> </dl></dd> <a name="$&-variable"> <dt>$& variable: <a href="../ch04_04.htm#INDEX-405">4.4.5. Regular Expression Special Variables</a></dt> <a name="$<-variable"> <dt>$< variable: <a href="../ch04_04.htm#INDEX-340">4.4.1. Global Special Variables</a></dt> <a name="$>-variable"> <dt>$> variable: <a href="../ch04_04.htm#INDEX-343">4.4.1. Global Special Variables</a></dt> <a name="$@-variable"> <dt>$@ variable: <a href="../ch04_04.htm#INDEX-335">4.4.1. Global Special Variables</a></dt> <a name="$-----variable"> <dt>$ variable: <a href="../ch04_04.htm#INDEX-314">4.4.1. Global Special Variables</a></dt> <a name="$`-variable"> <dt>$` variable: <a href="../ch04_04.htm#INDEX-407">4.4.5. Regular Expression Special Variables</a></dt> <a name="$!-variable"> <dt>$! variable: <a href="../ch04_04.htm#INDEX-332">4.4.1. Global Special Variables</a></dt> <a name="$[-variable"> <dt>$[ variable: <a href="../ch04_04.htm#INDEX-354">4.4.1. Global Special Variables</a></dt> <a name="$]-variable"> <dt>$] variable: <a href="../ch04_04.htm#INDEX-355">4.4.1. Global Special Variables</a></dt> <a name="$^-variable"> <dt>$^ variable: <a href="../ch04_04.htm#INDEX-425">4.4.6. Filehandle Special Variables</a></dt> <a name="$^A-variable"> <dt>$^A variable: <a href="../ch04_04.htm#INDEX-326">4.4.1. Global Special Variables</a></dt> <a name="$^D-variable"> <dt>$^D variable: <a href="../ch04_04.htm#INDEX-357">4.4.1. Global Special Variables</a></dt> <a name="$^E-variable"> <dt>$^E variable: <a href="../ch04_04.htm#INDEX-359">4.4.1. Global Special Variables</a></dt> <a name="$^F-variable"> <dt>$^F variable: <a href="../ch04_04.htm#INDEX-361">4.4.1. Global Special Variables</a></dt> <a name="$^H-variable"> <dt>$^H variable: <a href="../ch04_04.htm#INDEX-363">4.4.1. Global Special Variables</a></dt> <a name="$^I-variable"> <dt>$^I variable: <a href="../ch04_04.htm#INDEX-364">4.4.1. Global Special Variables</a></dt> <a name="$^L-variable"> <dt>$^L variable: <a href="../ch04_04.htm#INDEX-322">4.4.1. Global Special Variables</a></dt> <a name="$^M-variable"> <dt>$^M variable: <a href="../ch04_04.htm#INDEX-366">4.4.1. Global Special Variables</a></dt> <a name="$^N-variable"> <dt>$^N variable: <a href="../ch04_04.htm#INDEX-413">4.4.5. Regular Expression Special Variables</a></dt> <a name="$^O-variable"> <dt>$^O variable: <a href="../ch04_04.htm#INDEX-367">4.4.1. Global Special Variables</a></dt> <a name="$^P-variable"> <dt>$^P variable: <a href="../ch04_04.htm#INDEX-369">4.4.1. Global Special Variables</a></dt> <a name="$-:-variable"> <dt>$: variable: <a href="../ch04_04.htm#INDEX-324">4.4.1. Global Special Variables</a></dt> <a name="$-variable"> <dt>$, variable: <a href="../ch04_04.htm#INDEX-311">4.4.1. Global Special Variables</a></dt> <a name="$$-variable"> <dt>$$ variable: <a href="../ch04_04.htm#INDEX-337">4.4.1. Global Special Variables</a></dt> <a name="$.-variable"> <dt>$. variable: <a href="../ch04_04.htm#INDEX-306">4.4.1. Global Special Variables</a></dt> <a name="$=-variable"> <dt>$= variable: <a href="../ch04_04.htm#INDEX-419">4.4.6. Filehandle Special Variables</a></dt> <a name="$#-variable"> <dt>$# variable: <a href="../ch04_04.htm#INDEX-328">4.4.1. Global Special Variables</a></dt> <a name="$--variable"> <dt>$- variable: <a href="../ch04_04.htm#INDEX-421">4.4.6. Filehandle Special Variables</a></dt> <a name="$-variable"> <dt>$( variable: <a href="../ch04_04.htm#INDEX-346">4.4.1. Global Special Variables</a></dt> <a name="$-variable"> <dt>$) variable: <a href="../ch04_04.htm#INDEX-349">4.4.1. Global Special Variables</a></dt> <a name="$%-variable"> <dt>$% variable: <a href="../ch04_04.htm#INDEX-417">4.4.6. Filehandle Special Variables</a></dt> <a name="$+-variable"> <dt>$+ variable: <a href="../ch04_04.htm#INDEX-411">4.4.5. Regular Expression Special Variables</a></dt> <a name="$?-variable"> <dt>$? variable: <a href="../ch04_04.htm#INDEX-330">4.4.1. Global Special Variables</a></dt> ⌨️ 快捷键说明
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