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Index: E

\E string metacharacter : 1.13. Escaping Characters

/e substitution modifier

1.8. Expanding Variables in User Input
6.0. Introduction
6.4. Commenting Regular Expressions
7.7. Writing a Filter

each(�) : 5.10. Merging Hashes

eager pattern matching : 6.0. Introduction

echo and password input : 15.10. Reading Passwords

editing files : (see file contents)

editing input : 15.11. Editing Input

/ee substitution modifier

1.8. Expanding Variables in User Input
6.4. Commenting Regular Expressions

elements of arrays : (see arrays)

elements of hashes : (see hashes)

email

matching valid addresses : 6.19. Matching a Valid Mail Address
random signatures : 16.22. Program: sigrand
reading with POP3 : 18.5. Reading Mail with POP3
sending : 18.3. Sending Mail
sending HTML forms via : 19.13. Saving a Form to a File or Mail Pipe
sorting (example subroutine) : 10.17. Program: Sorting Your Mail
tracking time path of : 3.11. Program: hopdelta

empty base class test : 13.9. Writing an Inheritable Class

empty string ("") : 1.0. Introduction

encodings, multiple-byte : 6.18. Matching Multiple-Byte Characters

=end pod directive : 12.16. Documenting Your Module with Pod

__END__ tokens : 7.6. Storing Files Inside Your Program Text

Epoch : (see date and time)

errors

CGI scripts : 19.0. Introduction

500 Server Error : 19.3. Fixing a 500 Server Error
redirecting error messages : 19.2. Redirecting Error Messages

controlling for other programs : 16.9. Controlling the Input, Output, and Error of Another Program

exceptions in subroutines : 10.12. Handling Exceptions

reading STDERR from programs : 16.7. Reading STDERR from a Program

reporting filenames in : 7.4. Making Perl Report Filenames in Errors

reporting like built-ins : 12.12. Reporting Errors and Warnings Like Built-Ins

returning failure from subroutines : 10.10. Returning Failure

trapping in require/use statements : 12.2. Trapping Errors in require or use

trapping undefined function calls : 10.15. Trapping Undefined Function Calls with AUTOLOAD

web server error log

19.0. Introduction
20.13. Processing Server Logs

escaping chacters : 1.13. Escaping Characters

eval(�)

in substitution

1.8. Expanding Variables in User Input
6.0. Introduction
6.4. Commenting Regular Expressions

with require/use statement : 12.2. Trapping Errors in require or use

events, Tk resize : 15.16. Responding to Tk Resize Events

exceptions

handling in subroutines : 10.12. Handling Exceptions
trapping undefined function calls : 10.15. Trapping Undefined Function Calls with AUTOLOAD

exclusive locks : 7.11. Locking a File

exec(�)

16.0. Introduction
16.3. Replacing the Current Program with a Different One
19.6. Executing Commands Without Shell Escapes

exists(�) : 5.1. Adding an Element to a Hash

multiple hash key values : 5.7. Hashes with Multiple Values Per Key

expanding tabs : 1.7. Expanding and Compressing Tabs

expanding variables in user input : 1.8. Expanding Variables in User Input

Expect module : 15.13. Controlling Another Program with Expect

Expect, controlling programs with : 15.13. Controlling Another Program with Expect

expn program (example) : 18.9. Program: expn and vrfy

@EXPORT array (use pragma) : 12.1. Defining a Module's Interface

@EXPORT_OK array (use pragma) : 12.1. Defining a Module's Interface

@EXPORT_TAGS array (use pragma) : 12.1. Defining a Module's Interface

Exporter module

12.0. Introduction
12.1. Defining a Module's Interface

exporting to modules : 12.0. Introduction

expressions, interpolating within strings : 1.10. Interpolating Functions and Expressions Within Strings

extracting from arrays : (see arrays)

extracting URLs from HTML : 20.3. Extracting URLs

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