Index: N

-n command-line option : 7.7. Writing a Filter

Nagle's algorithm : 17.3. Communicating over TCP

named pipes

16.11. Making a Process Look Like a File with Named Pipes

16.22. Program: sigrand

names of current subroutines : 10.4. Determining Current Function Name

natural logarithms : 2.13. Taking Logarithms

navigation web with robots : 20.11. Creating a Robot

NDBM files : 14.0. Introduction

nested HTML tags : 20.6. Extracting or Removing HTML Tags

nested subroutines : 10.16. Nesting Subroutines

Net::DNS module : 18.9. Program: expn and vrfy

Net::FTP module : 18.2. Being an FTP Client

Net::NNTP module : 18.4. Reading and Posting Usenet News Messages

Net::POP3 module : 18.5. Reading Mail with POP3

Net::Telnet : 18.6. Simulating Telnet from a Program

Net::Whois module : 18.8. Using Whois to Retrieve Information from the InterNIC

Net:Ping module : 18.7. Pinging a Machine

netlock program : 7.21. Program: netlock

Netscape history.db file : 14.11. Program: ggh - Grep Netscape Global History

new( ) : 13.0. Introduction

new_tmpfile( ) (IO::File) : 7.5. Creating Temporary Files

newline characters : (see line breaks)

newlines : (see line breaks; whitespace)

news messages (Usenet) : 18.4. Reading and Posting Usenet News Messages

NFA (non-deterministic finite automata) : 6.0. Introduction

noecho input mode : 15.10. Reading Passwords

NOFILE constant : 7.17. Caching Open Output Filehandles

non-blocking I/O : 7.14. Doing Non-Blocking I/O

non-deterministic finite automata : 6.0. Introduction

non-forking servers : 17.13. Non-Forking Servers

non-greedy pattern matching

6.0. Introduction

6.15. Greedy and Non-Greedy Matches

nonforker program (example) : 17.13. Non-Forking Servers

NOT functionality in regular expressions : 6.17. Expressing AND, OR, and NOT in a Single Pattern

nounder_demo program (example) : 13.15. Creating Magic Variables with tie

nstore( ) : 11.13. Storing Data Structures to Disk

numbers

(see also values)

1.4. Converting Between ASCII Characters and Values

2.0. Introduction

adding commas to : 2.17. Putting Commas in Numbers

complex (imaginary) : 2.15. Using Complex Numbers

converting binary with decimal : 2.4. Converting Between Binary and Decimal

converting with ASCII characters : 1.4. Converting Between ASCII Characters and Values

decimal places, controlling : 13.14. Overloading Operators

floating-point : 2.0. Introduction

comparing : 2.2. Comparing Floating-Point Numbers

rounding : 2.3. Rounding Floating-Point Numbers

logarithms : 2.13. Taking Logarithms

matrix multiplication : 2.14. Multiplying Matrices

octal and hexadecimal : 2.16. Converting Between Octal and Hexadecimal

operating on integer series : 2.5. Operating on a Series of Integers

plural words based on : 2.18. Printing Correct Plurals

primes, calculating : 2.19. Program: Calculating Prime Factors

random

2.0. Introduction

2.7. Generating Random Numbers

biasing : 2.10. Generating Biased Random Numbers

roman numerals : 2.6. Working with Roman Numerals

strings as valid numbers : 2.1. Checking Whether a String Is a Valid Number

trigonometry : 2.11. Doing Trigonometry in Degrees, not Radians

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