Index O

[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]

/o pattern-matching modifier 
O_ flags  2nd 
O_NONBLOCK option 
OASIS group 
object attributes 
object methods 
object-oriented programming  2nd 
objects 
    cloning parent objects 
    closures as 
    constructing  2nd 
    destroying  2nd 
    determining subclass membership 
    managing class data 
    managing instance data 
    tied objects 
oct( ) 
octal
    numbers, converting 
    values, working with symbolic file permissions instead 
octets 
    treating Unicode strings as 
open pragma 
open( )  [See also processes]
    caching open filehandles 
    creating temporary files 
    file access modes 
    file descriptors, creating aliases for 
    filehandles 
        storing in variables 
    filtering output 
    magic open 
    reading from other programs 
    unusual filenames 
opendir( ) 
    globbing 
    readdir( ) 
opening
    file descriptors 
    files 
OpenSSL libraries 
operators
    line input  2nd 
    overloading 
OR functionality in regular expressions 
or operator, vs. || operator 
ord( ) 
outer( ) 
outlaw $_ program 
outline programs 
output
    controlling decimal places 
    controlling for other programs 
    filtering 
    flushing 
    gathering from programs 
    random access I/O 
    writing to other programs 
output( ) 
output_fh( ) 
output_file( ) 
overloading operators 
overridden methods 
overriding
    built-in functions 
    signal handlers