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Index: N

n: 25.1. Newlines

(see also newlines)

-n (loop) command-line switch: 19.1.3. Switches

named

character: 2.6.2. String Literals

character, metasymbol for: 5.3.2. Specific Characters

characters, inserting: 15.2. Effects of Character Semantics

pipes: 16.3.4. Named Pipes

named unary operators: 2.11.3. Filename Globbing Operator

3.10. Named Unary and File Test Operators

listing of: 3.10. Named Unary and File Test Operators

names: 2.5. Names

arrays: 2.4. Variables

attributes, subroutines: 6.5.1. The locked and method Attributes

capitalization conventions: 2.5. Names

classes, distinguishing from subroutines: 12.3.4. Package-Quoted Classes

commands: 1.2.2. Verbs

constructors: 12.4.2. Initializers

file: 2.6.8. Other Literal Tokens

for files==>filenames: 29.2.128. rename

format (see format names)

formats associated with filehandles: 7. Formats

functions: 1.2.2. Verbs

getting from network addresses: 29.2.47. gethostbyaddr

group names: 29.2.46. getgrnam

hashes: 2.4. Variables

hashes, storing in: 1.2.1.2. Pluralities

hostnames, translating to network addresses: 29.2.48. gethostbyname

identifiers vs.: 2.5. Names

labels and filehandles: 2.5. Names

login (see login names)

lookups of: 2.5.1. Name Lookups

methods, tied variables: 14. Tied Variables

modules: 11.1. Using Modules

capitalization in: 11.1. Using Modules

modules/packages: 24.3. Programming with Style

network addresses, getting from: 29.2.51. getnetbyaddr

packages: 10. Packages

parameters, not requiring: 6.2.1. Tricks with Parameter Lists

ports, getting from number: 29.2.64. getservbyname

program (see $0 variable)

protocols, getting from port numbers: 29.2.65. getservbyport

protocols, translating to/from numbers: 29.2.58. getprotobyname

scope, confining to: 4.8.1. Scoped Variable Declarations

signals: 16.1. Signals

subroutines: 6.1. Syntax

capitalization in: 6.1. Syntax

symbol tables: 10.1. Symbol Tables

temporary files, generating: 23.2.3. Temporary Files

translating to network addresses: 29.2.52. getnetbyname

typeglobs: 2.10. Typeglobs and Filehandles

users: 29.2.62. getpwnam

variable: 24.3. Programming with Style

variables: 1.2.1. Variable Syntax

2.4. Variables

namespace (see also packages)

encapsulation based on: 14.6. Tie Modules on CPAN

modules and: 11.2.1. Module Privacy and the Exporter

namespaces: 2.5. Names

access, restricting with Safe module: 23.3.1.1. Restricting namespace access

for packages: 1.2.1.4. Simplicities

naming, socket: 29.2.5. bind

natural languages: 1.2. Natural and Artificial Languages

environment variables controlling Perl handling of: 19.2. Environment Variables

NDBM_File module: 32.1.10. DBM Interfaces

ne operator: 24.1.1. Universal Blunders

negation

arithmetic (-)operator: 3.5. Ideographic Unary Operators

bitwise (~) operator: 3.5. Ideographic Unary Operators

character classes: 5.4.1. Custom Character Classes

5.4.2. Classic Perl Character Class Shortcuts

logical (!) operator: 3.5. Ideographic Unary Operators

of character class: 1.7.1. Quantifiers

POSIX character classes: 5.4.4. POSIX-Style Character Classes

negation operator (!), overloading: 13.3. Overloadable Operators

negative array subscripts, counting from end of array: 24.1.5. Previous Perl Traps

negative lookahead assertions: 5.9.4. The Little Engine That /Could(n't)?/

5.10.1. Lookaround Assertions

negative subscripts in Perl: 2.3. Built-in Data Types

nested

arrays: 9.1. Arrays of Arrays

data structures: 1.2.1.3. Complexities

data structures, printed: 20.2.4. Display

destruction: 12.6. Instance Destructors

lists: 9.1. Arrays of Arrays

subroutines: 8.3.7.2. Nested subroutines

Net::hostent module: 29.2.49. gethostent

32.1.8. Networking and Interprocess Communication

Class::Struct, using to create objects and accesors: 32.6. Class::Struct

Net::netent module: 29.2.51. getnetbyaddr

32.1.8. Networking and Interprocess Communication

netnews: 22.1. The CPAN modules Directory

(see also Usenet)

Net::Ping module: 32.1.8. Networking and Interprocess Communication

Net::proto module: 29.2.59. getprotobynumber

Net::protoent module: 32.1.8. Networking and Interprocess Communication

Net::servent module: 32.1.8. Networking and Interprocess Communication

networking

clients: 16.5.1. Networking Clients

modules for: 32.1.8. Networking and Interprocess Communication

modules implementing network protocols: 22.1. The CPAN modules Directory

network addresses, translating to names: 29.2.51. getnetbyaddr

29.2.47. gethostbyaddr

network filesystems (see NFS)

network information, functions for retrieving: 29.1. Perl Functions by Category

servers: 16.5.2. Networking Servers

services, Perl module for interacting with: 22.1. The CPAN modules Directory

Win32 network modules: 32.1.20. Microsoft-Related Modules

networking modules: 16.5. Sockets

networks file (see /etc/networks file)

new method: 17.2.1.1. Thread creation

29.2.100. new

newlines: 2.2. Molecules

blank lines, truth values and: 1.6.2.1. The while and until statements

chomp function, deleting with: 29.2.11. chomp

dot (.) metacharacter, matching: 5.3.3. Wildcard Metasymbols

in filenames, security risks of: 23.1.2. Cleaning Up Your Environment

Perl program portability and: 25.1. Newlines

removing: 1.4. Filehandles

in string literals: 2.6.2. String Literals

strings containing, matches against: 5.2.1. Pattern Modifiers

newsgroups: 0.6.2. Usenet Newsgroups

next, used in a do while: 4.5. Bare Blocks

next command, do {} while construct, not taking: 24.1.3. C Traps

next operator: 1.6.2.4. Breaking out: next and last

4.4.1. while and until Statements

4.4.4. Loop Control

4.4.4. Loop Control

29.2.101. next

exiting once-through blocks with: 4.5. Bare Blocks

next if construct: 24.2.1. Time Efficiency

NFA (nondeterministic finite-state automaton): 5.9.4. The Little Engine That /Could(n't)?/

limitations of: 16.5. Sockets

$nlink file statistic: 29.2.165. stat

NNN metasymbol: 5.3.2. Specific Characters

no declarations: 4.7. Global Declarations

4.9. Pragmas

11.1. Using Modules

14.1.3. Magically Banishing $_

29.2.102. no

nomethod overloading key: 13.5. When an Overload Handler Is Missing (nomethod and fallback)

nonbacktracking subpatterns: 5.10.2. Nonbacktracking Subpatterns

nondeterministic finite-state automaton (NFA): 5.9.4. The Little Engine That /Could(n't)?/

noninteractive mode, putting debugger in: 20.4. Unattended Execution

not (!) operator: 3.5. Ideographic Unary Operators

not equal to (!=) operator: 3.12. Equality Operators

notational convenience, tied arrays: 14.2.2. Notational Convenience

nouns: 1.2. Natural and Artificial Languages

packages, handling of: 1.2.1.4. Simplicities

novice programmers, common mistakes of: 24.1. Common Goofs for Novices

null

filehandle ;angle operator and: 2.11.2. Line Input (Angle) Operator

list: 2.8. List Values and Arrays

null device, Unix: 14.4.2. Creative Filehandles

null list, assigning to arrays: 2.8.2. Array Length

null values ("" or 0): 1.2.1.1. Singularities

number, line (see __LINE__ token)

number width: 25.2. Endianness and Number Width

numbered variables: 28.2. Special Variables in Alphabetical Order

numbers: 1.2.1. Variable Syntax

arrays, storing in: 1.2.1.2. Pluralities

bitwise operators, working with: 3.13. Bitwise Operators

command (see command history, debugger and)

commas, inserting into: 7.1. Format Variables

comparison operators for: 1.5.6. Some Numeric and String Comparison Operators

converting nonnumeric variables to: 13.3. Overloadable Operators

d for digit=d (for digit): 1.7. Regular Expressions

digits in names: 2.5. Names

floating-point (see floating-point numbers)

functions dealing with: 29.1. Perl Functions by Category

hexadecimal: 2.6.1. Numeric Literals

29.2.73. hex

hexadecimal, converting to: 5.2.3. The s/// Operator (Substitution)

integers (see integers)

justifying by decimal point: 7. Formats

large, underscore and: 2.6.1. Numeric Literals

octal: 2.6.1. Numeric Literals

29.2.103. oct

for pages: 28.2. Special Variables in Alphabetical Order

port, getting name for: 29.2.64. getservbyname

ports, getting protocol names from: 29.2.65. getservbyport

protocol: 29.2.59. getprotobynumber

random: 29.2.119. rand

29.2.164. srand

strings, converting to: 2.6. Scalar Values

truncating with int: 29.2.76. int

truth values of: 1.6.1. What Is Truth?

typing in Perl: 2.6. Scalar Values

width of: 25.2. Endianness and Number Width

numeric context: 2.7.1. Scalar and List Context

numeric literals: 2.6.1. Numeric Literals

NV (internal double value): 21.2. Internal Data Types

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