Symbols | 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 | Explanatory note

N

n command (debugger) : Debugger Commands
-n switch, perl : Switches
named pipes : Named pipes
named unary operators Filename globbing operator Named Unary and File Test Operators
names arrays : Variables capitalization conventions : Variables commands : Verbs current working directory : Cwd--Get Pathname of Current Working Directory file : Other literal tokens for files (see filenames) format (see format names) functions : Verbs getting from network addresses gethostbyaddr getnetbyaddr getting from port number : getservbyname global variables : vars--Predeclare Global Variable Names hashes : Variables labels and filehandles : Variables modules : Modules modules/packages : Programming with Style program (see $0 variable) protocol : getprotobynumber getting from port number : getservbyport signals : Signals subroutine : Subroutines subroutines : Variables translating to network addresses gethostbyname getnetbyname typeglobs Typeglobs and Filehandles Passing Symbol Table Entries (Typeglobs) user (see usernames) variable Symbol--Generate Anonymous Globs; Qualify Variable Names Programming with Style variables Nouns Variables
namespace (see packages)
namespaces creating safe : Safe--Create Safe Namespaces for Evaluating Perl Code
naming socket : bind
natural languages : Natural and Artificial Languages
NDBM_File module : AnyDBM_File--Provide Framework for Multiple DBMs
NDBM_File mofule : NDBM_File--Tied Access to NDBM Files
ne operator : Universal Blunders
negation arithmetic (-) operator : Ideographic Unary Operators bitwise (~) operator : Ideographic Unary Operators logical (!) operator : Ideographic Unary Operators of character class : Quantifiers
negative lookahead asserion : Regular expression extensions
nested data structures, printed : Debugger Commands destruction : Destructors lists A Brief Tutorial: Manipulating Lists of Lists Data Structure Code Examples packages : Packages
Net: :Ping module : Net::Ping--Check Whether a Host Is Online
network address translating to names : getnetbyaddr
network addresses translating to names : gethostbyaddr
networks file (see /etc/networks file)
new method : new
new( ) : FileHandle--Supply Object Methods for Filehandles
newlines boundary assertions and : The rules of regular expression matching removing : Filehandles in string literals : String literals
newsgroups : Usenet Newsgroups
new_from_fd( ) : FileHandle--Supply Object Methods for Filehandles
next operator Breaking out: next and last Loop control next next if construct : Time Efficiency
NEXTKEY method : Tying Hashes
NFA (nondeterministic finite-state automaton) : The rules of regular expression matching
$nlink file statistic : stat
no declaration Pragmas no
nomethod operator : No method
nondeterministic finite-state automaton (NFA) : The rules of regular expression matching
not (!) operator : Ideographic Unary Operators
not equal to (!=) operator : Equality Operators
nouns : Nouns
$NR (see $. variable)
null filehandle angle operator and : Line input (angle) operator list : List Values and Arrays scalars : Boolean context
number (see _ _LINE_ _ token) line (see _ _LINE_ _ token) port getting protocol name from : getservbyport port, getting name for : getservbyname protocol : getprotobynumber
numbers command (see command history, debugger and) comparing in awk : a2p comparison operators for : Comparison Operators complex : Math::Complex--Complex Numbers Package \d (for digit) : Regular Expressions digits in names : Variables floating-point : Math::BigFloat--Arbitrary-Length, Floating-Point Math Package hexadecimal (see hexadecimal characters) The rules of regular expression matching hex integer : integer--Do Arithmetic in Integer Instead of Double integers : Math::BigInt--Arbitrary-Length Integer Math Package justifying by decimal point : Formats large, underscore and : Numeric literals octal (see octal characters) The rules of regular expression matching oct for pages : Per-Filehandle Special Variables random rand srand truncating with int : int
numeric literals : Numeric literals Symbols | 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 Explanatory note Copyright © 1997 O'Reilly & Associates, Inc. All Rights Reserved.