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<html><head><title>Index: P</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="Learning Perl, 3rd. Ed." 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: P</H2><DL><!-- ========================== --><a name="pack-function"><dt>pack function: <a href="../ch16_02.htm#INDEX-1044">16.2. Manipulating Data with pack and unpack</a></dt><!-- ========================== --><a name="packages"><dt>packages: <a href="../appb_03.htm#INDEX-1136"> B.3. Packages</a></dt><!-- ========================== --><a name="parameter-lists"><dt>parameter lists: <a href="../ch04_05.htm#INDEX-332">4.5. Arguments</a></dt><dd><dl> <a name="empty"> <dt>empty: <a href="../ch04_08.htm#INDEX-351">4.8.2. Empty Parameter Lists</a></dt> <a name="variable-length"> <dt>variable-length: <a href="../ch04_08.htm#INDEX-348">4.8. Variable-length Parameter Lists</a></dt> </dl></dd><!-- ========================== --><a name="parent-processes-managing"><dt>parent processes, managing: <a href="../ch14_01.htm#INDEX-949">14. Process Management</a></dt><!-- ========================== --><a name="parentheses"><dt>parentheses</dt><dd><dl> <a name="file-tests-and"> <dt>file tests and: <a href="../ch11_06.htm#INDEX-800">11.6. File Tests</a></dt> <a name="grouping-patterns-with"> <dt>grouping patterns with: <a href="../ch07_02.htm#INDEX-514">7.2.3. Grouping in Patterns</a></dt> <a name="indicating-precedence"> <dt>indicating precedence: <a href="../ch02_06.htm#INDEX-214">2.6.2. Operator Precedence and Associativity</a></dt> <a name="optional-use-of"> <dt>optional use of: <a href="../ch03_04.htm#INDEX-284">3.4.1. The pop and push Operators</a></dt><dd><dl> <a name="with-print-function"> <dt>with print function: <a href="../ch06_04.htm#INDEX-463">6.4. Output to Standard Output</a></dt> </dl></dd> <a name="with-memory-function"> <dt>with memory function: <a href="../ch08_04.htm#INDEX-555">8.4. Memory Parentheses</a></dt> </dl></dd><!-- ========================== --><a name="partial-evaluation-operators"><dt>partial-evaluation operators: <a href="../ch10_09.htm#INDEX-715">10.9.3. Control Structures Using Partial-Evaluation Operators</a></dt><!-- ========================== --><a name="password-databases-Unix"><dt>password databases (Unix): <a href="../appb_07.htm#INDEX-1197"> B.7.1. Direct System Database Access</a></dt><!-- ========================== --><a name="PATH-environment-variable"><dt>PATH environment variable: <a href="../ch14_03.htm#INDEX-959">14.3. The Environment Variables</a></dt><!-- ========================== --><a name="pattern-match-operator-m--"><dt>pattern match operator (m//): <a href="../ch09_01.htm#INDEX-574">9.1. Matches with m//</a></dt><!-- ========================== --><a name="patterns"><dt>patterns: <a href="../ch07_01.htm#INDEX-493">7.1. What Are Regular Expressions?</a></dt><dd><dl> <dt><a href="../ch07_01.htm#INDEX-494">7.1. What Are Regular Expressions?</a></dt> <dt><a href="../ch07_02.htm#INDEX-499">7.2. Using Simple Patterns</a></dt> <a name="manpages-for"> <dt>manpages for: <a href="../ch08_05.htm#INDEX-571">8.5.2. And There's More</a></dt> <a name="split-operator-and"> <dt>split operator and: <a href="../ch09_07.htm#INDEX-630">9.7. The split Operator</a></dt> <a name="test-program-for"> <dt>test program for: <a href="../ch07_03.htm#INDEX-517">7.3. A Pattern Test Program</a></dt> </dl></dd><!-- ========================== --><a name="percent-sign-%"><dt>percent sign (%): <a href="../ch06_05.htm#INDEX-472">6.5. Formatted Output with printf</a></dt><dd><dl> <a name="indicating-conversion"> <dt>indicating conversion: <a href="../ch06_05.htm#INDEX-470">6.5. Formatted Output with printf</a></dt> <a name="indicating-entire-hash"> <dt>indicating entire hash: <a href="../ch05_02.htm#INDEX-389">5.2.1. The Hash as a Whole</a></dt> <a name="printing"> <dt>printing: <a href="../ch06_05.htm#INDEX-481">6.5. Formatted Output with printf</a></dt> </dl></dd><!-- ========================== --><a name="performance-slowed-by-automatic-match-variables"><dt>performance, slowed by automatic match variables: <a href="../ch09_05.htm#INDEX-603">9.5.2. The Automatic Match Variables</a></dt><!-- ========================== --><a name="period"><dt>period (see <a href="idx_d.htm#dot">dot</a>)</dt><!-- ========================== --><a name="Perl"><dt>Perl: <a href="../ch01_02.htm#INDEX-12">1.2. What Does "Perl" Stand For?</a></dt><dd><dl> <a name="advanced-techniques-for"> <dt>advanced techniques for: <a href="../ch17_01.htm#INDEX-1083">17. Some Advanced Perl Techniques</a></dt> <a name="bugs-in"> <dt>bugs in: <a href="../ch01_03.htm#INDEX-39">1.3.2. How Can I Get Support for Perl?</a></dt><dd><dl> <a name="reporting"> <dt>reporting: <a href="../ch01_03.htm#INDEX-58">1.3.4. What If I Find a Bug in Perl?</a></dt> </dl></dd> <a name="converting-other-programming-languages-to"> <dt>converting other programming languages to: <a href="../appb_25.htm#INDEX-1310"> B.25. Converting Other Languages to Perl</a></dt> <a name="current-trends-in"> <dt>current trends in: <a href="../ch01_02.htm#INDEX-26">1.2.4. What's Happening with Perl Now?</a></dt> <a name="documentation-for"> <dt>documentation for: <a href="../ch01_03.htm#INDEX-41">1.3.3. Are There Any Other Kinds of Support?</a></dt><dd><dl> <dt><a href="../appb_01.htm#INDEX-1124"> B.1. Further Documentation</a></dt> </dl></dd> <a name="libraries-and-modules-for"> <dt>libraries and modules for: <a href="../appb_04.htm#INDEX-1137"> B.4. Extending Perl's Functionality</a></dt> <a name="licenses-for"> <dt>licenses for: <a href="../ch01_03.htm#INDEX-31">1.3. How Can I Get Perl?</a></dt> <a name="mailing-lists-and-newsgroups-for"> <dt>mailing lists and newsgroups for: <a href="../ch01_03.htm#INDEX-50">1.3.3. Are There Any Other Kinds of Support?</a></dt> <a name="obtaining"> <dt>obtaining: <a href="../ch01_03.htm#INDEX-29">1.3. How Can I Get Perl?</a></dt> <a name="portability-and"> <dt>portability and: <a href="../ch01_01.htm#INDEX-7">1.1.2. Why Are There So Many Footnotes?</a></dt><dd><dl> <dt><a href="../ch01_02.htm#INDEX-24">1.2.2. Is Perl Easy or Hard?</a></dt> </dl></dd> <a name="reasons-for-using-not-using"> <dt>reasons for using/not using: <a href="../ch01_02.htm#INDEX-28">1.2.5. What's Perl Really Good For?</a></dt> <a name="security-and"> <dt>security and: <a href="../appb_14.htm#INDEX-1257"> B.14. Security</a></dt><dd><dl> <dt><a href="../appb_16.htm#INDEX-1268"> B.16. The Common Gateway Interface (CGI)</a></dt> </dl></dd> <a name="support-for"> <dt>support for: <a href="../ch01_03.htm#INDEX-36">1.3.2. How Can I Get Support for Perl?</a></dt> </dl></dd><!-- ========================== --><a name="Perl-identifiers"><dt>Perl identifiers: <a href="../ch02_05.htm#INDEX-178">2.5. Scalar Variables</a></dt><!-- ========================== --><a name="Perl-Monastery"><dt>Perl Monastery: <a href="../ch01_03.htm#INDEX-52">1.3.3. Are There Any Other Kinds of Support?</a></dt><!-- ========================== --><a name="perlboot-manpage-object-oriented-programming-and"><dt>perlboot manpage, object-oriented programming and: <a href="../appb_20.htm#INDEX-1290"> B.20.2. Object-Oriented Programming</a></dt><!-- ========================== --><a name="perlbug-utility"><dt>perlbug utility: <a href="../ch01_03.htm#INDEX-56">1.3.4. What If I Find a Bug in Perl?</a></dt><!-- ========================== --><a name="perldata-manpage-here-documents-and"><dt>perldata manpage, here documents and: <a href="../appb_08.htm#INDEX-1212"> B.8.2. Here documents</a></dt><!-- ========================== --><a name="perldebug-manpage"><dt>perldebug manpage: <a href="../appb_15.htm#INDEX-1262"> B.15. Debugging</a></dt><!-- ========================== --><a name="perldiag-manpage"><dt>perldiag manpage: <a href="../ch01_04.htm#INDEX-87">1.4.2. What's Inside That Program?</a></dt><dd><dl> <a name="errors-and"> <dt>errors and: <a href="../ch17_01.htm#INDEX-1086">17.1. Trapping Errors with eval</a></dt> <a name="warnings-explained-in"> <dt>warnings explained in: <a href="../ch02_04.htm#INDEX-173">2.4. Perl's Built-in Warnings</a></dt> </dl></dd><!-- ========================== --><a name="perldoc-command"><dt>perldoc command: <a href="../ch01_05.htm#INDEX-106">1.5. A Whirlwind Tour of Perl</a></dt><!-- ========================== --><a name="perldoc-manpage"><dt>perldoc manpage: <a href="../appb_01.htm#INDEX-1127"> B.1. Further Documentation</a></dt><!-- ========================== --><a name="perldsc-manpage-data-structures-and"><dt>perldsc manpage, data structures and: <a href="../appb_20.htm#INDEX-1285"> B.20.1. Complex Data Structures</a></dt><!-- ========================== --><a name="perlfaq-manpage"><dt>perlfaq manpage: <a href="../ch10_05.htm#INDEX-662">10.5. The elsif Clause</a></dt><dd><dl> <dt><a href="../appb_01.htm#INDEX-1126"> B.1. Further Documentation</a></dt></dl></dd><!-- ========================== --><a name="perlfork-manpage"><dt>perlfork manpage: <a href="../appb_31.htm#INDEX-1331"> B.31. Threads and Forking</a></dt><!-- ========================== --><a name="perlform-manpage-formats-and"><dt>perlform manpage, formats and: <a href="../appb_12.htm#INDEX-1245"> B.12. Formats</a></dt><!-- ========================== --><a name="perlfunc-manpage"><dt>perlfunc manpage: <a href="../ch10_04.htm#INDEX-660">10.4. The Naked Block Control Structure</a></dt><dd><dl> <a name="format-letters-and"> <dt>format letters and: <a href="../ch16_02.htm#INDEX-1048">16.2. Manipulating Data with pack and unpack</a></dt> <a name="grep-operator-and"> <dt>grep operator and: <a href="../appb_10.htm#INDEX-1236"> B.10.1. map and grep</a></dt> <a name="map-operator-and"> <dt>map operator and: <a href="../appb_10.htm#INDEX-1234"> B.10.1. map and grep</a></dt> <a name="mathematical-functions-and"> <dt>mathematical functions and: <a href="../appb_09.htm#INDEX-1220"> B.9.1. Advanced Math Functions</a></dt> <a name="operators-and"> <dt>operators and: <a href="../appb_08.htm#INDEX-1205"> B.8. Other Operators and Functions</a></dt> <a name="splice-operator-and"> <dt>splice operator and: <a href="../appb_10.htm#INDEX-1239"> B.10.2. The splice Operator</a></dt> <a name="System-V-IPC-and"> <dt>System V IPC and: <a href="../appb_13.htm#INDEX-1250"> B.13.1. System V IPC</a></dt> <a name="vec-operator-and"> <dt>vec operator and: <a href="../appb_11.htm#INDEX-1242"> B.11. Bits and Pieces</a></dt> </dl></dd><!-- ========================== --><a name="perlipc-manpage"><dt>perlipc manpage: <a href="../ch14_06.htm#INDEX-983">14.6. Getting Down and Dirty with Fork</a></dt><!-- ========================== --><a name="perlipc-module-System-V-IPC-and"><dt>perlipc module, System V IPC and: <a href="../appb_13.htm#INDEX-1251"> B.13.1. System V IPC</a></dt><!-- ========================== --><a name="perllexwarn-manpage"><dt>perllexwarn manpage: <a href="../ch02_04.htm#INDEX-175">2.4. Perl's Built-in Warnings</a></dt><!-- ========================== --><a name="perllocale-manpage"><dt>perllocale manpage: <a href="../appb_30.htm#INDEX-1328"> B.30. Locales and Unicode</a></dt><!-- ========================== --><a name="perllol-manpage-data-structures-and"><dt>perllol manpage, data structures and: <a href="../appb_20.htm#INDEX-1286"> B.20.1. Complex Data Structures</a></dt><!-- ========================== --><a name="perlmod-manpage"><dt>perlmod manpage</dt><dd><dl> <a name="syntax-extensions-and"> <dt>syntax extensions and: <a href="../appb_19.htm#INDEX-1278"> B.19. Syntax Extensions</a></dt> <a name="writing-modules-and"> <dt>writing modules and: <a href="../appb_04.htm#INDEX-1148"> B.4.4. Writing Your Own Modules</a></dt> </dl></dd><!-- ========================== --><a name="perlmodinstall-manpage"><dt>perlmodinstall manpage: <a href="../appb_04.htm#INDEX-1146"> B.4.3. Finding and Installing Modules</a></dt><!-- ========================== --><a name="perlmodlib-manpage"><dt>perlmodlib manpage</dt><dd><dl> <a name="pragmas-and"> <dt>pragmas and: <a href="../appb_06.htm#INDEX-1180"> B.6. Pragmas</a></dt> <a name="writing-modules-and"> <dt>writing modules and: <a href="../appb_04.htm#INDEX-1149"> B.4.4. Writing Your Own Modules</a></dt> </dl></dd><!-- ========================== --><a name="perlobj-manpage-object-oriented-programming-and"><dt>perlobj manpage, object-oriented programming and: <a href="../appb_20.htm#INDEX-1289"> B.20.2. Object-Oriented Programming</a></dt><!-- ========================== -->⌨️ 快捷键说明
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