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<html><head><title>Index: R</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: R</H2><DL><!-- ========================== --><a name="raise-to-the-power-of-operator-**="><dt>raise to the power of operator (**=): <a href="../ch02_05.htm#INDEX-196">2.5.3. Binary Assignment Operators</a></dt><!-- ========================== --><a name="range-operator-.."><dt>range operator (..): <a href="../ch03_03.htm#INDEX-270">3.3. List Literals</a></dt><!-- ========================== --><a name="read-function-database-records-and"><dt>read function, database records and: <a href="../ch16_03.htm#INDEX-1055">16.3. Fixed-length Random-access Databases</a></dt><!-- ========================== --><a name="readdir-operator"><dt>readdir operator: <a href="../ch12_04.htm#INDEX-866">12.4. Directory Handles</a></dt><!-- ========================== --><a name="readline-operator"><dt>readline operator: <a href="../ch12_03.htm#INDEX-862">12.3. An Alternate Syntax for Globbing</a></dt><!-- ========================== --><a name="recursive-directory-listing"><dt>recursive directory listing: <a href="../ch12_05.htm#INDEX-871">12.5. Recursive Directory Listing</a></dt><!-- ========================== --><a name="redo-operator"><dt>redo operator: <a href="../ch10_08.htm#INDEX-696">10.8.3. The redo Operator</a></dt><!-- ========================== --><a name="references"><dt>references: <a href="../ch03_04.htm#INDEX-281">3.4. List Assignment</a></dt><dd><dl> <dt><a href="../appb_20.htm#INDEX-1279"> B.20. References</a></dt></dl></dd><!-- ========================== --><a name="Registry-Windows"><dt>Registry (Windows): <a href="../appb_07.htm#INDEX-1195"> B.7.1. Direct System Database Access</a></dt><!-- ========================== --><a name="regular-expression-engines"><dt>regular expression engines: <a href="../ch17_05.htm#INDEX-1106">17.5. More Powerful Regular Expressions</a></dt><dd><dl> <a name="resources-for-further-information"> <dt>resources for further information: <a href="../appb_02.htm#INDEX-1131"> B.2. Regular expressions</a></dt> </dl></dd><!-- ========================== --><a name="regular-expression-memories"><dt>regular expression memories: <a href="../ch08_04.htm#INDEX-557">8.4. Memory Parentheses</a></dt><!-- ========================== --><a name="regular-expressions"><dt>regular expressions: <a href="../ch07_01.htm#INDEX-491">7. Concepts of Regular Expressions</a></dt><dd><dl> <dt><a href="../ch17_05.htm#INDEX-1105">17.5. More Powerful Regular Expressions</a></dt> <a name="resources-for-further-reading"> <dt>resources for further reading: <a href="../appb_02.htm#INDEX-1130"> B.2. Regular expressions</a></dt> <a name="using"> <dt>using: <a href="../ch09_01.htm#INDEX-572">9. Using Regular Expressions</a></dt> </dl></dd><!-- ========================== --><a name="relational-databases"><dt>relational databases: <a href="../appb_07.htm#INDEX-1200"> B.7.3. Relational Database Access</a></dt><!-- ========================== --><a name="removing"><dt>removing</dt><dd><dl> <a name="directories"> <dt>directories: <a href="../ch13_04.htm#INDEX-905">13.4. Making and Removing Directories</a></dt> <a name="files"> <dt>files: <a href="../ch13_01.htm#INDEX-876">13.1. Removing Files</a></dt> </dl></dd><!-- ========================== --><a name="rename-function"><dt>rename function: <a href="../ch13_02.htm#INDEX-882">13.2. Renaming Files</a></dt><!-- ========================== --><a name="reports-formats-for"><dt>reports, formats for: <a href="../appb_12.htm#INDEX-1244"> B.12. Formats</a></dt><!-- ========================== --><a name="resources-for-further-reading"><dt>resources for further reading</dt><dd><dl> <a name="auxiliary-lock-files"> <dt>auxiliary lock files: <a href="../ch16_01.htm#INDEX-1040">16.1.2. Using a DBM Hash</a></dt> <a name="bitwise-operators"> <dt>bitwise operators: <a href="../ch11_06.htm#INDEX-836">11.6.4. Using Bitstrings</a></dt> <a name="file-tests"> <dt>file tests: <a href="../ch11_06.htm#INDEX-799">11.6. File Tests</a></dt> <a name="Perl"> <dt>Perl</dt><dd><dl> <a name="object-oriented-programming-and"> <dt>object-oriented programming and: <a href="../appb_20.htm#INDEX-1291"> B.20.2. Object-Oriented Programming</a></dt> <a name="using-with-the-Web"> <dt>using with the Web: <a href="../appb_16.htm#INDEX-1269"> B.16. The Common Gateway Interface (CGI)</a></dt> </dl></dd> <a name="Programming-Perl"> <dt>Programming Perl: <a href="../ch01_02.htm#INDEX-19">1.2.1. Why Didn't Larry Just Use Some Other Language?</a></dt> <a name="regular-expressions"> <dt>regular expressions: <a href="../ch17_05.htm#INDEX-1108">17.5.1. Non-greedy Quantifiers</a></dt><dd><dl> <dt><a href="../appb_02.htm#INDEX-1129"> B.2. Regular expressions</a></dt> </dl></dd> <a name="Tk"> <dt>Tk: <a href="../appb_32.htm#INDEX-1336"> B.32. Graphical User Interfaces (GUIs)</a></dt> </dl></dd><!-- ========================== --><a name="restrictions"><dt>restrictions: <a href="../ch04_10.htm#INDEX-358">4.10. The use strict Pragma</a></dt><!-- ========================== --><a name="return-operator"><dt>return operator: <a href="../ch04_11.htm#INDEX-362">4.11. The return Operator</a></dt><!-- ========================== --><a name="return-values"><dt>return values: <a href="../ch04_04.htm#INDEX-324">4.4. Return Values</a></dt><!-- ========================== --><a name="reverse-operator"><dt>reverse operator: <a href="../ch03_07.htm#INDEX-297">3.7.1. The reverse Operator</a></dt><dd><dl> <dt><a href="../ch15_04.htm#INDEX-1021">15.4. Advanced Sorting</a></dt></dl></dd><!-- ========================== --><a name="rindex-function"><dt>rindex function: <a href="../ch15_01.htm#INDEX-996">15.1. Finding a Substring with index</a></dt><!-- ========================== --><a name="rm-command-Unix"><dt>rm command (Unix): <a href="../ch13_01.htm#INDEX-877">13.1. Removing Files</a></dt><!-- ========================== --><a name="rmdir-operator"><dt>rmdir operator: <a href="../ch13_04.htm#INDEX-907">13.4. Making and Removing Directories</a></dt><!-- ========================== --><a name="rmtree-function"><dt>rmtree function: <a href="../ch13_04.htm#INDEX-908">13.4. Making and Removing Directories</a></dt><!-- ========================== --><a name="runtime"><dt>runtime: <a href="../ch01_04.htm#INDEX-97">1.4.3. 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