Perl Cookbook, Second Edition
| [SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [X] [Y] [Z] /s pattern-matching modifier multiple lines s/// operator stripping whitespace with save( ), HTML forms save_parameters( ), HTML forms SAX (Simple API for XML) events, parsing XML into scalar multiplication operator scalar operator, list version Scalar::Util module 2nd scalars arrays of scalar references detecting scalar context exchanging values between as numbers references to schemas, XML schemes, URLs scope of subroutine variables screen [See user interfaces] scripts, CGI [See CGI programming] SDBM files search( ), LDAP server searching for patterns [See regular expressions] seconds [See date and time values] Secure Sockets Layer (SSL) security CGI scripts 2nd executing user commands connecting through firewalls fetching secure web pages reading passwords without echo testing files for trustworthiness seek offset, filehandles seek( ) 2nd seekdir( ) select( ) determining whether data can be read or written reading from multiple filehandles 2nd self-referential data structures SelfLoader module send( ), communicating over TCP sendmail program servers daemon servers database, using SQL without forking LDAP 2nd search( ) multihomed multitasking, writing with POE non-forking POP fetching and summarizing messages POP3 preforking processing logs restarting on demand SMTP SOAP TCP, writing UDP, setting up web common log format fields performance, improving set theory setitimer( ) setting default I/O layers SGML (Standard Generalized Markup Language) shallow copies shared locks sharing variables among processes shell escapes, executing commands without shell wildcards for regular expression matching shift( ), circular lists shopping cart applications shuffle( ) arrays lines shutdown( ) %SIG hash SIGALRM signal 2nd SIGCHLD signal 2nd SIGHUP signal 2nd SIGINT signal 2nd signal handlers overriding writing signals blocking handlers for [See signal handlers] listing available process groups 2nd sending turning into fatal errors signatures, randomized SIGPIPE signal 2nd sigprocmask syscall SIGQUIT signal sigrand program SIGTERM signal sigtrap pragma SIGUSR1/SIGUSR2 signals Simple API for XML (SAX) simple difference Simple Mail Transfer Protocol (SMTP) Simple Object Access Protocol [See SOAP] sin( ) single inheritance single quote (') escaping size arrays, changing hashes, preallocating for Tk window resize events window or terminal, determining sleep( ) 2nd SMTP (Simple Mail Transfer Protocol) server SOAP (Simple Object Access Protocol) client server SOAP::Lite module 2nd SOCK_ constants sockaddr_in( ) 2nd sockaddr_un( ) Unix domain sockets socket( ) sockets bidirectional clients closing after forking connecting through firewalls daemon servers finding own name and address forking servers identifying machine at end logging port connection attempts managing multiple input streams multihomed servers non-blocking non-forking servers preforking servers protocol associated with restarting servers on demand TCP protocol communicating over writing clients writing servers UDP protocol writing clients for writing servers for Unix domain 2nd sort( ) by computable field hashes sorting array elements numerically arrays and lists by computable field DBM files directory contents 2nd du command output hash elements pod =head1 sections randomizing array element order randomizing file line order text into columns Soundex matching soundex( ) splice( ) split( ) processing all words in file reading records with pattern separators using reverse( ) with variable-length text fields sprintf( ) floating-point numbers comparing rounding SQL database SQL queries building programmatically without database server executing using DBI querying CSV files repeating efficiently saving results to Excel or CSV square brackets ([]) creating anonymous arrays and hashes srand( ) SSL (Secure Sockets Layer) standard filehandles Standard Generalized Markup Language (SGML) stat( ) 2nd timestamps Stat::lsMode module static data members STDERR filehandle controlling for other programs reading from programs STDIN filehandle preprocessing input stdio layer 2nd STDOUT filehandle 2nd filtering output sticky widgets, creating Storable module 2nd store( ) STORE( ) stream sockets 2nd strftime( ) 2nd String::Approx module 2nd strings 2nd [See also variables][See also variables] accessing substrings canonicalizing with Unicode combined characters checking if valid numbers converting ASCII to and from HTML case characters and values non-numeric copying and substituting doubled words, finding escaping characters hash element indices headlines and titles, capitalizing HTML text substitutions interpolating functions and expressions within matching letters words null-terminated, reading from binary files numeric operators with parsing date and time information in plurals based on numbers processing characters individually psgrep program reformatting paragraphs removing leading or trailing spaces removing or extracting HTML tags reversing elements of substituting specific words text color, changing treating as files Unicode support in Perl treating as octets treating as single characters universal character code StrNum class (example) struct( ) struct_flock( ), lockarea program structs, classes as sub keyword subclasses, determining membership subject, sorting mail by subroutines access arguments built-in, overriding currently running, name of email sorter exception handling localizing nesting passing arrays and hashes by reference passing by named parameter persistent private variables private for modules private variables prototypes for functions return context, detecting return values returning by reference returning failure skipping selected saving global values trapping undefined function calls writing switch statement substitution expanding filenames within strings substr( ) operators to use with pattern matching variables substrings SUPER pseudoclass superclasses 2nd accessing overridden methods surface copies surl script switch construct Switch module switch statement 2nd writing Symbol module Symbol::qualify( ) symbolic links duplicating directory trees to packages symbolic references symirror program symmetric difference Sys::Hostname module Sys::Syslog module syscalls sysopen( ) filehandles non-blocking I/O unusual filenames sysread( ) sysreadline( ) sysseek( ) system calls system( ) running multiple programs shell escapes SysV IPC syswrite( ) |