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<html><head><title>Index: A</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" ></p><map name="banner-map"><AREA SHAPE="RECT" COORDS="0,0,466,71" HREF="../index.htm" ALT="Programming Perl"><AREA SHAPE="RECT" COORDS="467,0,514,18" HREF="../jobjects/fsearch.htm" ALT="Search this book"></map><!-- TOP INDEX LINKS --><p><a href="idx_0.htm">Symbols</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 --><H1>Index: A</H1><DL><a name=".al-filename-extensions"><dt>.al filename extensions: <a href="../ch10_02.htm#INDEX-2261">10.2. Autoloading</a></dt><a name="-a-autosplit-command-line-switch"><dt>-a (autosplit) command-line switch: <a href="../ch19_01.htm#INDEX-3377">19.1.3. Switches</a></dt><a name="-A-access-age-file-test-operator"><dt>-A (access age) file test operator: <a href="../ch03_10.htm#INDEX-920">3.10. Named Unary and File Test Operators</a></dt><a name="-A-string-boundary"><dt>\A (string boundary): <a href="../ch05_06.htm#INDEX-1609">5.6.1. Beginnings: The \A and ^ Assertions</a></dt><a name="abbreviations-text"><a name="Control-A"><dt>Control-A: <a href="../ch05_02.htm#INDEX-1406">5.2.3. The s/// Operator (Substitution)</a></dt><dt>abbreviations, text: <a href="../ch32_01.htm#INDEX-5448">32.1.2. String Processing, Language Text Processing, Parsing, and Searching</a></dt><a name="abs-absolute-value-function"><dt>abs (absolute value) function: <a href="../ch29_02.htm#INDEX-4630">29.2.1. abs</a></dt><a name="abstraction"><dt>abstraction: <a href="../ch10_01.htm#INDEX-2179">10. Packages</a></dt><dd><dl> <a name="in-object-oriented-programming"> <dt>in object-oriented programming: <a href="../ch12_03.htm#INDEX-2364">12.3. Method Invocation</a></dt></dl></dd><a name="accept-function"><dt>accept function: <a href="../ch29_02.htm#INDEX-4631">29.2.2. accept </a></dt><a name="access-checks-setting-in-constructor"><dt>access checks, setting in constructor: <a href="../ch12_07.htm#INDEX-2561">12.7.5. Using Closures for Private Objects</a></dt><a name="access-time-file"><dt>access time, file: <a href="../ch29_02.htm#INDEX-5287">29.2.165. stat</a></dt><dd><dl> <dt><a href="../ch29_02.htm#INDEX-5392">29.2.193. utime</a></dt></dl></dd><a name="accessing"><dt>accessing</dt><dd><dl> <a name="array-of-hashes"> <dt>array of hashes: <a href="../ch09_03.htm#INDEX-2136">9.3.3. Access and Printing of an Array of Hashes</a></dt> <a name="elements-tied-arrays"> <dt>elements, tied arrays: <a href="../ch14_02.htm#INDEX-">14.2.1. Array-Tying Methods</a></dt> <a name="hashes-of-arrays"> <dt>hashes of arrays: <a href="../ch09_02.htm#INDEX-2120">9.2.3. Access and Printing of a Hash of Arrays</a></dt> <a name="multidimensional-arrays"> <dt>multidimensional arrays: <a href="../ch09_01.htm#INDEX-2092">9.1.3. Access and Printing</a></dt> <a name="multidimensional-hashes"> <dt>multidimensional hashes: <a href="../ch09_04.htm#INDEX-2150">9.4.3. Access and Printing of a Hash of Hashes</a></dt> <a name="overridden-methods"> <dt>overridden methods: <a href="../ch12_05.htm#INDEX-2461">12.5.2. Accessing Overridden Methods</a></dt> <a name="records-of-elaborate-data-structures"> <dt>records of elaborate data structures: <a href="../ch09_06.htm#INDEX-2165">9.6.1. Composition, Access, and Printing of More Elaborate Records</a></dt> <a name="slices-of-multidimensional-arrays"> <dt>slices of multidimensional arrays: <a href="../ch09_01.htm#INDEX-2098">9.1.4. Slices</a></dt></dl></dd><a name="accessor-methods"><dt>accessor methods: <a href="../ch12_04.htm#INDEX-2427">12.4.2. Initializers</a></dt><dd><dl> <a name="class-data-methods-working-like"> <dt>class data methods, working like: <a href="../ch12_08.htm#INDEX-2591">12.8. Managing Class Data</a></dt> <a name="creating"> <dt>creating: <a href="../ch12_07.htm#INDEX-2522">12.7. Managing Instance Data</a></dt> <a name="generating-with-autoloading"> <dt>generating with autoloading: <a href="../ch12_07.htm#INDEX-2550">12.7.3. Generating Accessors with Autoloading</a></dt> <a name="generating-with-closures"> <dt>generating with closures: <a href="../ch12_07.htm#INDEX-2552">12.7.4. Generating Accessors with Closures</a></dt> <a name="pseudohashes-and"> <dt>pseudohashes and: <a href="../ch12_07.htm#INDEX-2536">12.7.1. Field Declarations with use fields</a></dt></dl></dd><a name="$ACCUMULATOR"><dt>$ACCUMULATOR: <a href="../ch28_02.htm#INDEX-4401">28.2. Special Variables in Alphabetical Order</a></dt><a name="actions-debugger"><dt>actions (debugger)</dt><dd><dl> <a name="command-execution-specifying-from-debugger"> <dt>command execution, specifying from debugger: <a href="../ch20_02.htm#INDEX-3559">20.2.6. Actions and Command Execution</a></dt> <a name="listing-all"> <dt>listing all: <a href="../ch20_02.htm#INDEX-3536">20.2.2. Breakpoints</a></dt></dl></dd><a name="ActiveState-Perl-distribution"><dt>ActiveState Perl distribution</dt><dd><dl> <a name="installing-on-Windows-systems"> <dt>installing on Windows systems: <a href="../ch19_01.htm#INDEX-3354">19.1.1. #! and Quoting on Non-Unix Systems</a></dt> <a name="Microsoft-only-modules"> <dt>Microsoft-only modules: <a href="../ch32_01.htm#INDEX-5767">32.1.20. Microsoft-Related Modules</a></dt> <a name="PPM-Perl-Package-Manager"> <dt>PPM (Perl Package Manager): <a href="../ch22_02.htm#INDEX-3918">22.2. Using CPAN Modules</a></dt></dl></dd><a name="adding-additional-array-elements"><dt>adding additional array elements: <a href="../ch29_02.htm#INDEX-5375">29.2.190. unshift</a></dt><a name="addition"><dt>addition: <a href="../ch01_05.htm#INDEX-198">1.5.1. Some Binary Arithmetic Operators</a></dt><dd><dl> <a name="overloaded-plus-+-operator"> <dt>overloaded plus (+) operator: <a href="../ch13_02.htm#INDEX-2615">13.2. Overload Handlers</a></dt></dl></dd><a name="additive-operators"><dt>additive operators: <a href="../ch03_08.htm#INDEX-856">3.8. Additive Operators</a></dt><a name="address-of-operator-in-C"><dt>address-of operator (in C): <a href="../ch03_21.htm#INDEX-1024">3.21. C Operators Missing from Perl</a></dt><a name="addresses"><dt>addresses</dt><dd><dl> <a name="C-language-Perl-vs."> <dt>C language, Perl vs.: <a href="../ch24_01.htm#INDEX-4145">24.1.3. C Traps</a></dt> <a name="getting-from-hostnames"> <dt>getting from hostnames: <a href="../ch29_02.htm#INDEX-4852">29.2.52. getnetbyname</a></dt> <a name="network-getting-from-hostnames"> <dt>network, getting from hostnames: <a href="../ch29_02.htm#INDEX-4833">29.2.48. gethostbyname</a></dt> <a name="network-translating-to-names"> <dt>network, translating to names: <a href="../ch29_02.htm#INDEX-4823">29.2.47. gethostbyaddr</a></dt><dd><dl> <dt><a href="../ch29_02.htm#INDEX-4845">29.2.51. getnetbyaddr</a></dt> </dl></dd> <a name="packed-socket"> <dt>packed socket: <a href="../ch29_02.htm#INDEX-4908">29.2.67. getsockname</a></dt> <a name="reused-displaying-contents-of"> <dt>reused, displaying contents of: <a href="../ch20_03.htm#INDEX-3628">20.3.3. Debugger Options</a></dt> <a name="socket-names-as"> <dt>socket names as: <a href="../ch29_02.htm#INDEX-4647">29.2.5. bind</a></dt></dl></dd><a name="alarm-function"><dt>alarm function: <a href="../ch29_02.htm#INDEX-4633">29.2.3. alarm</a></dt><dd><dl> <a name="pattern-match-timing-out"> <dt>pattern match, timing out: <a href="../ch23_03.htm#INDEX-4088">23.3.2. Code Masquerading as Data</a></dt></dl></dd><a name="alert-bell"><dt>alert (bell): <a href="../ch02_06.htm#INDEX-563">2.6.2. String Literals</a></dt><a name="algorithms"><dd><dl> <a name="Perl-modules-for"> <dt>Perl modules for: <a href="../ch22_01.htm#INDEX-3821">22.1. The CPAN modules Directory</a></dt></dl></dd><a name="aliases"><dd><dl> <a name="for-characters"> <dt>for characters: <a href="../ch05_03.htm#INDEX-1501">5.3.2. Specific Characters</a></dt> <a name="debugger-command-for"> <dt>debugger command for: <a href="../ch20_02.htm#INDEX-3574">20.2.7. Miscellaneous Commands</a></dt> <a name="in-for-foreach-loops"> <dt>in for/foreach loops</dt><dd><dl> <a name="searching-and-replacing-elements-in-arrays"> <dt>searching and replacing elements in arrays: <a href="../ch05_02.htm#INDEX-1425">5.2.3.1. Modifying strings en passant</a></dt> </dl></dd> <a name="for-foreach-loops-creating-with"> <dt>for/foreach loops, creating with: <a href="../ch04_05.htm#INDEX-1154">4.5.1. Case Structures</a></dt> <a name="symbol-table-entries"> <dt>symbol table entries: <a href="../ch02_05.htm#INDEX-507">2.5.1. Name Lookups</a></dt><dd><dl> <dt><a href="../ch02_10.htm#INDEX-731">2.10. Typeglobs and Filehandles</a></dt> </dl></dd> <a name="symbol-table-key-assignment-to-typeglob"> <dt>symbol table key, assignment to typeglob: <a href="../ch10_01.htm#INDEX-2232">10.1. Symbol Tables</a></dt></dl></dd><a name="aliasing"><dt>aliasing, <a name="-in-foreach-loops">in foreach loops: <a href="../ch04_04.htm#INDEX-1106">4.4.3. foreach Loops</a></dt><a name="ALRM-signal"><dt>ALRM signal: <a href="../ch16_01.htm#INDEX-2943">16.1.3. Timing Out Slow Operations</a></dt><a name="alternation"><dt>alternation: <a href="../ch05_01.htm#INDEX-1288">5.1. The Regular Expression Bestiary</a></dt><dd><dl> <a name="character-classes-and"> <dt>character classes and: <a href="../ch05_04.htm#INDEX-1542">5.4.1. Custom Character Classes</a></dt> <a name="interior-limiting-scope-of"> <dt>interior, limiting scope of: <a href="../ch05_07.htm#INDEX-1663">5.7.2. Clustering</a></dt> <a name="match-one-or-the-other-...|..."> <dt>match one or the other (...|...): <a href="../ch05_03.htm#INDEX-1478">5.3.1. Metasymbol Tables</a></dt> <a name="in-patterns"> <dt>in patterns: <a href="../ch05_08.htm#INDEX-1670">5.8. Alternation</a></dt> <a name="precedence-pattern-matching"> <dt>precedence, pattern matching: <a href="../ch05_09.htm#INDEX-1706">5.9.4. The Little Engine That /Could(n't)?/</a></dt></dl></dd><a name="American-Standard-Code-for-Information-Interchange"><dt>American Standard Code for Information Interchange (see <a href="idx_a.htm#ASCII">ASCII</a>)</dt><a name="anchors"><dt>anchors: <a href="../ch01_07.htm#INDEX-379">1.7.3. Nailing Things Down</a></dt><dd><dl> <dt><a href="../ch05_06.htm#INDEX-1602">5.6. Positions</a></dt></dl></dd><a name="and-&-bitwise-operator"><dt>and (&) bitwise operator: <a href="../ch03_13.htm#INDEX-955">3.13. Bitwise Operators</a></dt><a name="and-&&-logical-operator"><dt>and (&&) logical operator: <a href="../ch01_05.htm#INDEX-243">1.5.5. Logical Operators</a></dt><dd><dl> <dt><a href="../ch03_14.htm#INDEX-967">3.14. C-Style Logical (Short-Circuit) Operators</a></dt> <dt><a href="../ch03_20.htm#INDEX-1019">3.20. Logical and, or, not, and xor</a></dt> <a name="precedence-and-operator-vs.-&&"> <dt>precedence, and operator vs. &&: <a href="../ch12_03.htm#INDEX-2388">12.3.3. Syntactic Snafus with Indirect Objects</a></dt></dl></dd><a name="and-operator"><dt>and operator: <a href="../ch24_03.htm#INDEX-4269">24.3. Programming with Style</a></dt><a name="angle-brackets"><dt>angle brackets (see <a href="idx_0.htm#right-angle-bracket">right and left angle brackets</a>)</dt><a name="angle-operator"><dt>angle operator: <a href="../ch02_11.htm#INDEX-745">2.11.2. Line Input (Angle) Operator</a></dt><dd><dl> <dt><a href="../ch19_01.htm#INDEX-3409">19.1.3. Switches</a></dt> <dt><a href="../ch24_01.htm#INDEX-4129">24.1.2. Frequently Ignored Advice</a></dt> <a name="reading-filehandle-from"> <dt>reading filehandle from: <a href="../ch14_04.htm#INDEX-">14.4.1. Filehandle-Tying Methods</a></dt>⌨️ 快捷键说明
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