lib/perl5/5.8.8/Pod/Functions.pm

   1 package Pod::Functions;
   2 use strict;
   3
   4 =head1 NAME
   5
   6 Pod::Functions - Group Perl's functions a la perlfunc.pod
   7
   8 =head1 SYNOPSIS
   9
  10     use Pod::Functions;
  11
  12     my @misc_ops = @{ $Kinds{ 'Misc' } };
  13     my $misc_dsc = $Type_Description{ 'Misc' };
  14
  15 or
  16
  17     perl /path/to/lib/Pod/Functions.pm
  18
  19 This will print a grouped list of Perl's functions, like the
  20 L<perlfunc/"Perl Functions by Category"> section.
  21
  22 =head1 DESCRIPTION
  23
  24 It exports the following variables:
  25
  26 =over 4
  27
  28 =item %Kinds
  29
  30 This holds a hash-of-lists. Each list contains the functions in the category
  31 the key denotes.
  32
  33 =item %Type
  34
  35 In this hash each key represents a function and the value is the category.
  36 The category can be a comma separated list.
  37
  38 =item %Flavor
  39
  40 In this hash each key represents a function and the value is a short
  41 description of that function.
  42
  43 =item %Type_Description
  44
  45 In this hash each key represents a category of functions and the value is
  46 a short description of that category.
  47
  48 =item @Type_Order
  49
  50 This list of categories is used to produce the same order as the
  51 L<perlfunc/"Perl Functions by Category"> section.
  52
  53 =back
  54
  55 =head1 CHANGES
  56
  57 1.02 20020813 <abe@ztreet.demon.nl>
  58     de-typo in the SYNOPSIS section (thanks Mike Castle for noticing)
  59
  60 1.01 20011229 <abe@ztreet.demon.nl>
  61     fixed some bugs that slipped in after 5.6.1
  62     added the pod
  63     finished making it strict safe
  64
  65 1.00 ??
  66     first numbered version
  67
  68 =cut
  69
  70 our $VERSION = '1.03';
  71
  72 require Exporter;
  73
  74 our @ISA = qw(Exporter);
  75 our @EXPORT = qw(%Kinds %Type %Flavor %Type_Description @Type_Order);
  76
  77 our(%Kinds, %Type, %Flavor);
  78
  79 our %Type_Description = (
  80     'ARRAY'     => 'Functions for real @ARRAYs',
  81     'Binary'    => 'Functions for fixed length data or records',
  82     'File'      => 'Functions for filehandles, files, or directories',
  83     'Flow'      => 'Keywords related to control flow of your perl program',
  84     'HASH'      => 'Functions for real %HASHes',
  85     'I/O'       => 'Input and output functions',
  86     'LIST'      => 'Functions for list data',
  87     'Math'      => 'Numeric functions',
  88     'Misc'      => 'Miscellaneous functions',
  89     'Modules'   => 'Keywords related to perl modules',
  90     'Network'   => 'Fetching network info',
  91     'Objects'   => 'Keywords related to classes and object-orientedness',
  92     'Process'   => 'Functions for processes and process groups',
  93     'Regexp'    => 'Regular expressions and pattern matching',
  94     'Socket'    => 'Low-level socket functions',
  95     'String'    => 'Functions for SCALARs or strings',
  96     'SysV'      => 'System V interprocess communication functions',
  97     'Time'      => 'Time-related functions',
  98     'User'      => 'Fetching user and group info',
  99     'Namespace' => 'Keywords altering or affecting scoping of identifiers',
 100 );
 101
 102 our @Type_Order = qw{
 103     String
 104     Regexp
 105     Math
 106     ARRAY
 107     LIST
 108     HASH
 109     I/O
 110     Binary
 111     File
 112     Flow
 113     Namespace
 114     Misc
 115     Process
 116     Modules
 117     Objects
 118     Socket
 119     SysV
 120     User
 121     Network
 122     Time
 123 };
 124
 125 while (<DATA>) {
 126     chomp;
 127     s/#.*//;
 128     next unless $_;
 129     my($name, $type, $text) = split " ", $_, 3;
 130     $Type{$name} = $type;
 131     $Flavor{$name} = $text;
 132     for my $t ( split /[,\s]+/, $type ) {
 133         push @{$Kinds{$t}}, $name;
 134     }
 135 }
 136
 137 close DATA;
 138
 139 my( $typedesc, $list );
 140 unless (caller) {
 141     foreach my $type ( @Type_Order ) {
 142         $list = join(", ", sort @{$Kinds{$type}});
 143         $typedesc = $Type_Description{$type} . ":";
 144         write;
 145     }
 146 }
 147
 148 format =
 149
 150 ^<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
 151     $typedesc
 152 ~~ ^<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
 153     $typedesc
 154  ~~  ^<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
 155         $list
 156 .
 157
 158 1;
 159
 160 __DATA__
 161 -X      File    a file test (-r, -x, etc)
 162 abs     Math    absolute value function
 163 accept  Socket  accept an incoming socket connect
 164 alarm   Process schedule a SIGALRM
 165 atan2   Math    arctangent of Y/X in the range -PI to PI
 166 bind    Socket  binds an address to a socket
 167 binmode I/O     prepare binary files for I/O
 168 bless   Objects create an object
 169 caller  Flow,Namespace  get context of the current subroutine call
 170 chdir   File    change your current working directory
 171 chmod   File    changes the permissions on a list of files
 172 chomp   String  remove a trailing record separator from a string
 173 chop    String  remove the last character from a string
 174 chown   File    change the owership on a list of files
 175 chr     String  get character this number represents
 176 chroot  File    make directory new root for path lookups
 177 close   I/O     close file (or pipe or socket) handle
 178 closedir        I/O     close directory handle
 179 connect Socket  connect to a remote socket
 180 continue        Flow    optional trailing block in a while or foreach
 181 cos     Math    cosine function
 182 crypt   String  one-way passwd-style encryption
 183 dbmclose        Objects,I/O     breaks binding on a tied dbm file
 184 dbmopen Objects,I/O     create binding on a tied dbm file
 185 defined Misc    test whether a value, variable, or function is defined
 186 delete  HASH    deletes a value from a hash
 187 die     I/O,Flow        raise an exception or bail out
 188 do      Flow,Modules    turn a BLOCK into a TERM
 189 dump    Misc,Flow       create an immediate core dump
 190 each    HASH    retrieve the next key/value pair from a hash
 191 endgrent        User    be done using group file
 192 endhostent      User    be done using hosts file
 193 endnetent       User    be done using networks file
 194 endprotoent     Network be done using protocols file
 195 endpwent        User    be done using passwd file
 196 endservent      Network be done using services file
 197 eof     I/O     test a filehandle for its end
 198 eval    Flow,Misc       catch exceptions or compile and run code
 199 exec    Process abandon this program to run another
 200 exists  HASH    test whether a hash key is present
 201 exit    Flow    terminate this program
 202 exp     Math    raise I<e> to a power
 203 fcntl   File    file control system call
 204 fileno  I/O     return file descriptor from filehandle
 205 flock   I/O     lock an entire file with an advisory lock
 206 fork    Process create a new process just like this one
 207 format  I/O     declare a picture format with use by the write() function
 208 formline        Misc    internal function used for formats
 209 getc    I/O     get     the next character from the filehandle
 210 getgrent        User    get next group record
 211 getgrgid        User    get group record given group user ID
 212 getgrnam        User    get group record given group name
 213 gethostbyaddr   Network get host record given its address
 214 gethostbyname   Network get host record given name
 215 gethostent      Network get next hosts record
 216 getlogin        User    return who logged in at this tty
 217 getnetbyaddr    Network get network record given its address
 218 getnetbyname    Network get networks record given name
 219 getnetent       Network get next networks record
 220 getpeername     Socket  find the other end of a socket connection
 221 getpgrp Process get process group
 222 getppid Process get parent process ID
 223 getpriority     Process get current nice value
 224 getprotobyname  Network get protocol record given name
 225 getprotobynumber        Network get protocol record numeric protocol
 226 getprotoent     Network get next protocols record
 227 getpwent        User    get next passwd record
 228 getpwnam        User    get passwd record given user login name
 229 getpwuid        User    get passwd record given user ID
 230 getservbyname   Network get services record given its name
 231 getservbyport   Network get services record given numeric port
 232 getservent      Network get next services record
 233 getsockname     Socket  retrieve the sockaddr for a given socket
 234 getsockopt      Socket  get socket options on a given socket
 235 glob    File            expand filenames using wildcards
 236 gmtime  Time    convert UNIX time into record or string using Greenwich time
 237 goto    Flow    create spaghetti code
 238 grep    LIST    locate elements in a list test true against a given criterion
 239 hex     Math,String     convert a string to a hexadecimal number
 240 import  Modules,Namespace       patch a module's namespace into your own
 241 index   String  find a substring within a string
 242 int     Math    get the integer portion of a number
 243 ioctl   File    system-dependent device control system call
 244 join    LIST    join a list into a string using a separator
 245 keys    HASH    retrieve list of indices from a hash
 246 kill    Process send a signal to a process or process group
 247 last    Flow    exit a block prematurely
 248 lc      String  return lower-case version of a string
 249 lcfirst String  return a string with just the next letter in lower case
 250 length  String  return the number of bytes in a string
 251 link    File    create a hard link in the filesytem
 252 listen  Socket  register your socket as a server
 253 local   Misc,Namespace  create a temporary value for a global variable (dynamic scoping)
 254 localtime       Time    convert UNIX time into record or string using local time
 255 lock    Threads get a thread lock on a variable, subroutine, or method
 256 log     Math    retrieve the natural logarithm for a number
 257 lstat   File    stat a symbolic link
 258 m//     Regexp  match a string with a regular expression pattern
 259 map     LIST    apply a change to a list to get back a new list with the changes
 260 mkdir   File    create a directory
 261 msgctl  SysV    SysV IPC message control operations
 262 msgget  SysV    get SysV IPC message queue
 263 msgrcv  SysV    receive a SysV IPC message from a message queue
 264 msgsnd  SysV    send a SysV IPC message to a message queue
 265 my      Misc,Namespace  declare and assign a local variable (lexical scoping)
 266 next    Flow    iterate a block prematurely
 267 no      Modules unimport some module symbols or semantics at compile time
 268 package Modules,Objects,Namespace       declare a separate global namespace
 269 prototype       Flow,Misc       get the prototype (if any) of a subroutine
 270 oct     String,Math     convert a string to an octal number
 271 open    File    open a file, pipe, or descriptor
 272 opendir File    open a directory
 273 ord     String  find a character's numeric representation
 274 our     Misc,Namespace  declare and assign a package variable (lexical scoping)
 275 pack    Binary,String   convert a list into a binary representation
 276 pipe    Process open a pair of connected filehandles
 277 pop     ARRAY   remove the last element from an array and return it
 278 pos     Regexp  find or set the offset for the last/next m//g search
 279 print   I/O     output a list to a filehandle
 280 printf  I/O     output a formatted list to a filehandle
 281 push    ARRAY   append one or more elements to an array
 282 q/STRING/       String  singly quote a string
 283 qq/STRING/      String  doubly quote a string
 284 quotemeta       Regexp  quote regular expression magic characters
 285 qw/STRING/      LIST    quote a list of words
 286 qx/STRING/      Process backquote quote a string
 287 qr/STRING/      Regexp  Compile pattern
 288 rand    Math    retrieve the next pseudorandom number
 289 read    I/O,Binary      fixed-length buffered input from a filehandle
 290 readdir I/O     get a directory from a directory handle
 291 readline        I/O     fetch a record from a file
 292 readlink        File    determine where a symbolic link is pointing
 293 readpipe        Process execute a system command and collect standard output
 294 recv    Socket  receive a message over a Socket
 295 redo    Flow    start this loop iteration over again
 296 ref     Objects find out the type of thing being referenced
 297 rename  File    change a filename
 298 require Modules load in external functions from a library at runtime
 299 reset   Misc    clear all variables of a given name
 300 return  Flow    get out of a function early
 301 reverse String,LIST     flip a string or a list
 302 rewinddir       I/O     reset directory handle
 303 rindex  String  right-to-left substring search
 304 rmdir   File    remove a directory
 305 s///    Regexp  replace a pattern with a string
 306 scalar  Misc    force a scalar context
 307 seek    I/O     reposition file pointer for random-access I/O
 308 seekdir I/O     reposition directory pointer
 309 select  I/O     reset default output or do I/O multiplexing
 310 semctl  SysV    SysV semaphore control operations
 311 semget  SysV    get set of SysV semaphores
 312 semop   SysV    SysV semaphore operations
 313 send    Socket  send a message over a socket
 314 setgrent        User    prepare group file for use
 315 sethostent      Network prepare hosts file for use
 316 setnetent       Network prepare networks file for use
 317 setpgrp Process set the process group of a process
 318 setpriority     Process set a process's nice value
 319 setprotoent     Network prepare protocols file for use
 320 setpwent        User    prepare passwd file for use
 321 setservent      Network prepare services file for use
 322 setsockopt      Socket  set some socket options
 323 shift   ARRAY   remove the first element of an array, and return it
 324 shmctl  SysV    SysV shared memory operations
 325 shmget  SysV    get SysV shared memory segment identifier
 326 shmread SysV    read SysV shared memory
 327 shmwrite        SysV    write SysV shared memory
 328 shutdown        Socket  close down just half of a socket connection
 329 sin     Math    return the sine of a number
 330 sleep   Process block for some number of seconds
 331 socket  Socket  create a socket
 332 socketpair      Socket  create a pair of sockets
 333 sort    LIST    sort a list of values
 334 splice  ARRAY   add or remove elements anywhere in an array
 335 split   Regexp  split up a string using a regexp delimiter
 336 sprintf String  formatted print into a string
 337 sqrt    Math    square root function
 338 srand   Math    seed the random number generator
 339 stat    File    get a file's status information
 340 study   Regexp  optimize input data for repeated searches
 341 sub     Flow    declare a subroutine, possibly anonymously
 342 substr  String  get or alter a portion of a stirng
 343 symlink File    create a symbolic link to a file
 344 syscall I/O,Binary      execute an arbitrary system call
 345 sysopen File    open a file, pipe, or descriptor
 346 sysread I/O,Binary      fixed-length unbuffered input from a filehandle
 347 sysseek I/O,Binary      position I/O pointer on handle used with sysread and syswrite
 348 system  Process run a separate program
 349 syswrite        I/O,Binary      fixed-length unbuffered output to a filehandle
 350 tell    I/O     get current seekpointer on a filehandle
 351 telldir I/O     get current seekpointer on a directory handle
 352 tie     Objects bind a variable to an object class
 353 tied    Objects get a reference to the object underlying a tied variable
 354 time    Time    return number of seconds since 1970
 355 times   Process,Time    return elapsed time for self and child processes
 356 tr///   String  transliterate a string
 357 truncate        I/O     shorten a file
 358 uc      String  return upper-case version of a string
 359 ucfirst String  return a string with just the next letter in upper case
 360 umask   File    set file creation mode mask
 361 undef   Misc    remove a variable or function definition
 362 unlink  File    remove one link to a file
 363 unpack  Binary,LIST     convert binary structure into normal perl variables
 364 unshift ARRAY   prepend more elements to the beginning of a list
 365 untie   Objects break a tie binding to a variable
 366 use     Modules,Namespace       load a module and import its namespace
 367 use     Objects load in a module at compile time
 368 utime   File    set a file's last access and modify times
 369 values  HASH    return a list of the values in a hash
 370 vec     Binary  test or set particular bits in a string
 371 wait    Process wait for any child process to die
 372 waitpid Process wait for  a particular child process to die
 373 wantarray       Misc,Flow       get void vs scalar vs list context of current subroutine call
 374 warn    I/O     print debugging info
 375 write   I/O     print a picture record
 376 y///    String  transliterate a string