OS/2 Shareware BBS: 10 Tools/10-Tools.zip/perl502b.zip/pod/PERLDOC/Functions.pm

Text File | 1995-12-28 | 12KB | 296 lines

package PerlDoc::Functions;

#:vi:set ts=20

require Exporter;

@ISA = qw(Exporter);
@EXPORT = qw(%Kinds %Type %Flavor %Type_Descriptions @Type_Order);

%Type_Description = (
    'ARRAY'    => 'Functions for real @ARRAYs',
    'Binary'    => 'Functions for fixed length data or records',
    'File'    => 'Functions for filehandles, files, or directories',
    'Flow'    => 'Keywords related to control flow of your perl program',
    'HASH'    => 'Functions for real %HASHes',
    'I/O'    => 'Input and output functions',
    'LIST'    => 'Functions for list data',
    'Math'    => 'Numeric functions',
    'Misc'    => 'Miscellaneous functions',
    'Modules'    => 'Keywords related to perl modules',
    'Network'    => 'Fetching network info',
    'Objects'    => 'Keywords related to classes and object-orientedness',
    'Process'    => 'Functions for processes and process groups',
    'Regexp'    => 'Regular expressions and pattern matching',
    'Socket'    => 'Low-level socket functions',
    'String'    => 'Functions for SCALARs or strings',
    'SysV'    => 'System V interprocess communication functions',
    'Time'    => 'Time-related functions',
    'User'    => 'Fetching user and group info',
    'Namespace'    => 'Keywords altering or affecting scoping of identifiers',
);

@Type_Order = qw{
    String
    Regexp
    Math
    ARRAY
    LIST
    HASH
    I/O
    Binary
    File
    Flow
    Namespace
    Misc
    Process
    Modules
    Objects
    Socket
    SysV
    User
    Network
    Time
};

while (<DATA>) {
    chomp;
    s/#.*//;
    next unless $_;
    ($name, $type, $text) = split " ", $_, 3;
    $Type{$name} = $type;
    $Flavor{$name} = $text;
    for $type ( split /[,\s]+/, $type ) {
    push @{$Kinds{$type}}, $name;
    }
}

unless (caller) {
    foreach $type ( @Type_Order ) {
    $list = join(", ", sort @{$Kinds{$type}});
    $typedesc = $Type_Description{$type} . ":";
    write;
    }
}

format =

^<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
    $typedesc
~~ ^<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
    $typedesc
 ~~  ^<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
    $list
.

1

__DATA__
-X    File    a file test (-r, -x, etc)
abs    Math    absolute value function
accept    Socket    accept an incoming socket connect
alarm    Process    schedule a SIGALRM
atan2    Math    arctangent of Y/X
bind    Socket    binds an address to a socket
binmode    I/O    prepare binary files on old systems
bless    Objects    create an object
caller    Flow,Namespace    get context of the current subroutine call
chdir    File    change your current working directory
chmod    File    changes the permissions on a list of files
chomp    String     remove a trailing record separator from a string
chop    String     remove the last character from a string
chown    File    change the owership on a list of files
chr    String     get character this number represents
chroot    File    make directory new root for path lookups
close    I/O    close file (or pipe or socket) handle
closedir    I/O    close directory handle
connect    Socket    connect to a remove socket
continue    Flow    optional trailing block in a while or foreach
cos    Math    cosine function
crypt    String    one-way passwd-style encryption
dbmclose    Objects,I/O    breaks binding on a tied dbm file
dbmopen    Objects,I/O    create binding on a tied dbm file
defined    Misc    test whether a value, variable, or function is defined
delete    HASH    deletes a value from a hash
die    I/O,Flow    raise an exception or bail out
do    Flow,Modules    turn a BLOCK into a TERM
dump    Misc,Flow    create an immediate core dump
each    HASH    retrieve the next key/value pair from a hash
endgrent    User    be done using group file
endhostent    User    be done using hosts file
endnetent    User    be done using networks file
endprotoent    Network    be done using protocols file
endpwent    User    be done using passwd file
endservent    Network    be done using services file
eof    I/O    test a filehandle for its end
eval    Flow,Misc    catch exceptions or compile code
exec    Process    abandon this program to run another
exists    HASH    test whether a hash key is present
exit    Flow    terminate this program
exp    Math    raise I<e> to a power
fcntl    File    file control system all
fileno    I/O    return file descriptor from filehandle
flock    I/O    lock an entire file with an advisory lock
fork    Process    create a new process just like this one
format    I/O    declare a picture format with use by the write() function
formline    Misc    internal function used for formats
getc    I/O    get    the next character from the filehandle
getgrent    User    get next group record
getgrgid    User    get group record given group user ID
getgrnam    User    get group record given group name
gethostbyaddr    Network    get host record given its address
gethostbyname    Network    get host record given name
gethostent    Network    get next hosts record
getlogin    User    return who logged in at this tty
getnetbyaddr    Network    get network record given its address
getnetbyname    Network    get networks record given name
getnetent    Network    get next networks record
getpeername    Socket    find the other hend of a socket connection
getpgrp    Process    get process group
getppid    Process    get parent process ID
getpriority    Process    get current nice value
getprotobyname    Network    get protocol record given name
getprotobynumber    Network    get protocol record numeric protocol
getprotoent    Network    get next protocols record
getpwent    User    get next passwd record
getpwnam    User    get passwd record given user login name
getpwuid    User    get passwd record given user ID
getservbyname    Network    get services record given its name
getservbyport    Network    get services record given numeric port
getservent    Network    get next services record
getsockname    Socket    retrieve the sockaddr for a given socket
getsockopt    Socket    get socket options on a given socket
glob    File        expand filenames using wildcards
gmtime    Time    convert UNIX time into record or string using Greenwich time
goto    Flow    create spaghetti code
grep    LIST    locate elements in a list test true against a given criterion
hex    Math,String    convert a string to a hexadecimal number
import    Modules,Namespace    patch a module's namespace into your own
index    String    find a substring within a string
int    Math    get the integer portion of a number
ioctl    File    system-dependent device control system call
join    LIST    join a list into a string using a separator
keys    HASH    retrieve list of indices from a hash
kill    Process    send a signal to a process or process group
last    Flow    exit a block prematurely
lc    String    return lower-case version of a string
lcfirst    String    return a string with just the next letter in lower case
length    String    return the number of bytes in a string
link    File    create a hard link in the filesytem
listen    Socket    register your socket as a server
local    Misc,Namespace    create a temporary value for a global variable (dynamic scoping)
localtime    Time    convert UNIX time into record or string using local time
log    Math    retrieve the natural logarithm for a number
lstat    File    stat a symbolic link
m//    Regexp    match a string with a regular expression pattern
map    LIST    apply a change to a list to get back a new list with the changes
mkdir    File    create a directory
msgctl    SysV    SysV IPC message control operations
msgget    SysV    get SysV IPC message queue
msgrcv    SysV    receive a SysV IPC message from a message queue
msgsnd    SysV    send a SysV IPC message to a message queue
my    Misc,Namespace    declare and assign a local variable (lexical scoping)
next    Flow    iterate a block prematurely
no    Modules    unimport some module symbols or semantics at compile time
package    Modules,Objects,Namespace    declare a separate global namespace
oct    String,Math    convert a string to an octal number
open    File    open a file, pipe, or descriptor
opendir    File    open a directory
ord    String    find a character's numeric representation
pack    Binary,String    convert a list into a binary representation
pipe    Process    open a pair of connected filehandles
pop    ARRAY    remove the last element from an array and return it
pos    Regexp    find or set the offset for the last/next m//g search
print    I/O    output a list to a filehandle
printf    I/O      output a formatted list to a filehandle
push    ARRAY    append one or more elements to an array
q/STRING/    String    singly quote a string
qq/STRING/    String    doubly quote a string
quotemeta    Regexp    quote regular expression magic characters
qw/STRING/    LIST    quote a list of words
qx/STRING/    Process    backquote quote a string
rand    Math    retrieve the next pseudorandom number
read    I/O,Binary    fixed-length buffered input from a filehandle
readdir    I/O    get a directory from a directory handle
readlink    File    determine where a symbolic link is pointing
recv    Socket    receive a message over a Socket
redo    Flow    start this loop iteration over again
ref    Objects    find out the type of thing being referenced
rename    File    change a filename
require    Modules    load in external functions from a library at runtime
reset    Misc    clear all variables of a given name
return    Flow    get out of a function early
reverse    String,LIST    flip a string or a list
rewinddir    I/O    reset directory handle
rindex    String    right-to-left substring search
rmdir    File    remove a directory
s///    Regexp    replace a pattern with a string
scalar    Misc    force a scalar context
seek    I/O    reposition file pointer for random-access I/O
seekdir    I/O    reposition directory pointer
select    I/O    reset default output or do I/O multiplexing
semctl    SysV    SysV semaphore control operations
semget    SysV    get set of SysV semaphores
semop    SysV    SysV semaphore operations
send    Socket    send a message over a socket
setgrent    User    prepare group file for use
sethostent    Network    prepare hosts file for use
setnetent    Network    prepare networks file for use
setpgrp    Process    set the process group of a process
setpriority    Process    set a process's nice value
setprotoent    Network    prepare protocols file for use
setpwent    User    prepare passwd file for use
setservent    Network    prepare services file for use
setsockopt    Socket    set some socket options
shift    ARRAY    remove the first element of an array, and return it
shmctl    SysV    SysV shared memory operations
shmget    SysV    get SysV shared memory segment identifier
shmread    SysV    read SysV shared memory
shmwrite    SysV    write SysV shared memory
shutdown    Socket    close down just half of a socket connection
sin    Math    return the sin of a number
sleep    Process    block for some number of seconds
socket    Socket    create a socket
socketpair    Socket    create a pair of sockets
sort    LIST    sort a list of values
splice    ARRAY    add or remove elements anywhere in an array
split    Regexp    split up a string using a regexp delimiter
sprintf    String    formatted print into a string
sqrt    Math    square root function
srand    Math    seed the random number generator
stat    File    get a file's status information
study    Regexp    optimize input data for repeated searches
sub    Flow    declare a subroutine, possibly anonymously
substr    String    get or alter a portion of a stirng
symlink    File    create a symbolic link to a file
syscall    I/O,Binary    execute an arbitrary system call
sysread    I/O,Binary    fixed-length unbuffered input from a filehandle
system    Process    run a separate program
syswrite    I/O,Binary    fixed-length unbuffered output to a filehandle
tell    I/O    get current seekpointer on a filehandle
telldir    I/O    get current seekpointer on a directory handle
tie    Objects    bind a variable to an object class
time    Time    return number of seconds since 1970
times    Process,Time    return elapsed time for self and child processes
tr///    String    transliterate a string
truncate    I/O    shorten a file
uc    String    return upper-case version of a string
ucfirst    String    return a string with just the next letter in upper case
umask    File    set file creation mode mask
undef    Misc    remove a variable or function definition
unlink    File    remove one link to a file
unpack    Binary,LIST    convert binary structure into normal perl variables
unshift    ARRAY    prepend more elements to the beginning of a list
untie    Objects    break a tie binding to a variable
use    Modules,Namespace    load a module and import its namespace
use     Objects    load in a module at compile time
utime    File    set a file's last access and modify times
values    HASH    return a list of the values in a hash
vec    Binary    test or set particular bits in a string
wait    Process    wait for any child process to die
waitpid    Process    wait for  a particular child process to die
wantarray    Misc,Flow    get list vs array context of current subroutine call
warn    I/O    print debugging info
write    I/O    print a picture record
y///    String    transliterate a string