Symbols & Numbers | 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

Index: E

@EXPORT array: 28.2. Special Variables in Alphabetical Order

@EXPORT_OK array: 28.2. Special Variables in Alphabetical Order

%EXPORT_TAGS hash: 28.2. Special Variables in Alphabetical Order

-e (execute) command-line switch: 19.1.3. Switches

-e (exists) file test: 1.5.7. Some File Test Operators

3.10. Named Unary and File Test Operators

/e pattern modifier: 5.2.3. The s/// Operator (Substitution)

each function: 9.4.3. Access and Printing of a Hash of Hashes

14.3.1. Hash-Tying Methods

29.2.30. each

editors, support for debugging: 20.3.1. Editor Support for Debugging

effective GID (group ID): 28.2. Special Variables in Alphabetical Order

effective UID ($EFFECTIVE_USER_ID): 28.2. Special Variables in Alphabetical Order

(see also $< and $> variables)

$EFFECTIVE_GROUP_ID: 28.2. Special Variables in Alphabetical Order

28.2. Special Variables in Alphabetical Order

$EFFECTIVE_USER_ID: 28.2. Special Variables in Alphabetical Order

efficiency (see performance)

profiling: 20.6. The Perl Profiler

elements in arrays: 1.2.1.2.1. Arrays.

else-if statements: 1.6.1.1. The if and unless statements

ellipses (...): 5.3.1. Metasymbol Tables

else statements: 1.6.1.1. The if and unless statements

emacs

editor support for debugger: 20.3.1. Editor Support for Debugging

regular expressions, use of: 1.7. Regular Expressions

-*- sequences: 19.1. Command Processing

email: 22.1. The CPAN modules Directory

(see also mail)

embedding Perl: 21.4. Embedding Perl (Using Perl from C)

32.1.17. Module Installation Support

adding Perl interpreter to C program: 21.4.2. Adding a Perl Interpreter to Your C Program

compiling embedded programs: 21.4.1. Compiling Embedded Programs

evaluating Perl statement from C: 21.4.4. Evaluating a Perl Statement from C

perl interpreter program: 21. Internals and Externals

Perl stack, manipulating from C: 21.4.5. Fiddling with the Perl Stack from C

empty angle operator (<>): 1.4. Filehandles

empty subclass test: 12.5. Class Inheritance

encapsulation: 1.2.1.3. Complexities

8.3.4. Using Object Methods

12.1. Brief Refresher on Object-Oriented Lingo

namespace-based: 14.6. Tie Modules on CPAN

objects in closures: 12.7.5. Using Closures for Private Objects

encryption: 29.2.20. crypt

modules for: 32.1.12. Authentication, Security, and Encryption

Perl modules for: 22.1. The CPAN modules Directory

END blocks: 18.1. The Life Cycle of a Perl Program

exit value of program, modifying: 18.7. Avant-Garde Compiler, Retro Interpreter

order of running: 18.7. Avant-Garde Compiler, Retro Interpreter

skipping: 18.7. Avant-Garde Compiler, Retro Interpreter

end of string, matching: 5.6.2. Endings: The z, Z, and $ Assertions

__END__ token: 2.6.8. Other Literal Tokens

24.5.2. Generating Perl in Other Languages

28.2. Special Variables in Alphabetical Order

endgrent function: 29.2.44. getgrent

endhostent function: 29.2.49. gethostent

ending (see terminating)

ending escape sequences for character modification: 2.6.2. String Literals

endless loop (see infinite loops)

endprotoent function: 29.2.60. getprotoent

endpwent function: 29.2.61. getpwent

endservent function: 29.2.66. getservent

English module: 7.1. Format Variables

32.1.13. Perl Language Extensions and Internals

enqueue method: 17.2.3.1. Queues

%ENV hash: 28.2. Special Variables in Alphabetical Order

deleting from: 29.2.24. delete

portability of: 25.4. System Interaction

Env module: 32.1.13. Perl Language Extensions and Internals

env program, starting Perl with: 19.1. Command Processing

cleaning up: 23.1.2. Cleaning Up Your Environment

environment variables: 19.2. Environment Variables

28.2. Special Variables in Alphabetical Order

Env module: 32.1.13. Perl Language Extensions and Internals

modules, Perl use of: 19.2. Environment Variables

PERLDB_OPTS, setting debugger options with: 20.4. Unattended Execution

PERL_DESTRUCT_LEVEL: 12.6.1. Garbage Collection with DESTROY Methods

portability of: 25.4. System Interaction

shells vs. Perl: 24.1.4. Shell Traps

taint checking: 23.1. Handling Insecure Data

eof function: 1.6.2.1. The while and until statements

24.2.1. Time Efficiency

29.2.31. eof

tied filehandle, using on: 14.4.1. Filehandle-Tying Methods

eq operator: 24.1.1. Universal Blunders

equal method: 17.2.1.5. Identifying threads

equal to (=) operator: 3.12. Equality Operators

equality operators: 3.12. Equality Operators

erasing (see deleting)

errno: 28.2. Special Variables in Alphabetical Order

Errno module: 32.1.13. Perl Language Extensions and Internals

error messages: 24.3. Programming with Style

33. Diagnostic Messages

user efficiency, improving with: 24.2.6. User Efficiency

errors: 29.2.38. fileno

33. Diagnostic Messages

Carp module: 32.3. Carp

CGI::Carp module, handling of: 32.5. CGI::Carp

$@ variable for: 28.2. Special Variables in Alphabetical Order

$! variable for: 28.2. Special Variables in Alphabetical Order

$? variable for: 28.2. Special Variables in Alphabetical Order

failed symbol exports: 11.2.1.3. Managing unknown symbols

insecure data: 23.1. Handling Insecure Data

out-of-memory errors: 28.2. Special Variables in Alphabetical Order

subroutines: 6.2.2. Error Indications

warn function, producing error messages: 29.2.199. warn

writing to httpd or other CGI errors logs: 32.1.9. World Wide Web

ESC character: 2.6.2. String Literals

ESC in octal: 2.6.2. String Literals

escape sequences for control characters: 2.6.2. String Literals

/etc/group file: 24.2.1. Time Efficiency

29.2.44. getgrent

/etc/hosts file: 29.2.49. gethostent

/etc/networks file: 29.2.53. getnetent

/etc/passwd file: 24.2.1. Time Efficiency

29.2.61. getpwent

/etc/protocols file: 29.2.60. getprotoent

/etc/services file: 29.2.66. getservent

/etc/utmp file: 29.2.50. getlogin

eval: 2.5.1. Name Lookups

3.1. Terms and List Operators (Leftward)

8. References

24.2.1. Time Efficiency

29.2.32. eval

die function and: 29.2.25. die

loops and: 24.2.1. Time Efficiency

loop controls and: 4.5. Bare Blocks

packages and: 10. Packages

translating with variables: 5.2.4. The tr/// Operator (Transliteration)

restricted (reval): 23.3.1.1. Restricting namespace access

threads, catching exceptions with: 17.2.1.3. Catching exceptions from join

$EVAL_ERROR: 28.2. Special Variables in Alphabetical Order

eval_sv and eval_pv functions: 21.4.4. Evaluating a Perl Statement from C

intercepting: 28.2. Special Variables in Alphabetical Order

in detached child threads: 17.2.1.4. The detach method

die function and: 29.2.25. die

functions raising: 29.2. Perl Functions in Alphabetical Order

insecure data: 23.1. Handling Insecure Data

modules for: 32.1.15. Warnings and Exceptions

raising on failure: 32.1.13. Perl Language Extensions and Internals

raising to indicate subroutine errors: 6.2.2. Error Indications

threads, catching: 17.2.1.3. Catching exceptions from join

trapping: 29.2.32. eval

$EXCEPTIONS_BEING_CAUGHT: 28.2. Special Variables in Alphabetical Order

exclusive file locks: 16.2.1. File Locking

obtaining: 16.2.1. File Locking

exclusive or (xor) operator: 3.13. Bitwise Operators

3.20. Logical and, or, not, and xor

exec function: 29.2.33. exec

filehandles, leaving open across calls: 16.2.2. Passing Filehandles

list argument form, avoiding shell with: 23.3.2. Code Masquerading as Data

portability of: 25.5. Interprocess Communication (IPC)

executable image file: 18.1. The Life Cycle of a Perl Program

$EXECUTABLE_NAME: 28.2. Special Variables in Alphabetical Order

executing

code: 18.3. Executing Your Code

code, conditionally: 1.5.5. Logical Operators

methods: 12.3. Method Invocation

other programs from Perl: 29.2.174. system

Perl program: 1.3.1. How to Do It

Perl programs: 19.1. Command Processing

execution

code, order of: 18.7. Avant-Garde Compiler, Retro Interpreter

Perl programs: 18.1. The Life Cycle of a Perl Program

unattended, debugger: 20.4. Unattended Execution

execv function (in C): 29.2.33. exec

execvp function (in C): 29.2.33. exec

existence of a process: 16.1.1. Signaling Process Groups

exists function: 29.2.34. exists

invoking on hash: 14.3.1. Hash-Tying Methods

exit function: 29.2.35. exit

29.2.40. fork

threads and: 17.2.1.2. Thread destruction

exit status: 28.2. Special Variables in Alphabetical Order

exiting

debugger: 20.3.3. Debugger Options

if or unless blocks: 4.5. Bare Blocks

infinite loop: 4.4.2. for Loops

once-through blocks: 4.5. Bare Blocks

programs: 1.1. Getting Started

Perl debugger: 20.2.7. Miscellaneous Commands

exp function: 29.2.36. exp

expansion, filename: 29.2.69. glob

Expect module: 16.3.3. Bidirectional Communication

22.1. The CPAN modules Directory

explicit method invocations: 12.3. Method Invocation

exponential notation: 2.6.1. Numeric Literals

exponentiation (**) operator: 3.4. Exponentiation

exponentiation of integers: 21.4.5. Fiddling with the Perl Stack from C

Exporter module: 32.1.17. Module Installation Support

21.3.2. Creating Extensions

module privacy and: 11.2.1. Module Privacy and the Exporter

export_fail method: 11.2.1.3. Managing unknown symbols

exporting: 11. Modules

exporting symbols: 11.2. Creating Modules

11.2.1. Module Privacy and the Exporter

without using import method from Exporter: 11.2.1.1. Exporting without using Exporter's import method

export_to_level method: 11.2.1.1. Exporting without using Exporter's import method

EXPR and LIST: 4.2. Compound Statements

loops, separating with commas (,): 4.4.2. for Loops

multiple, in loops: 4.4.2. for Loops

Perl, supplying in replacement strings: 5.10.3. Programmatic Patterns

EXPRs: 4.2. Compound Statements

goto operator, use with: 4.6. goto

$EXTENDED_OS_ERROR: 28.2. Special Variables in Alphabetical Order

extending arrays: 2.8.2. Array Length

extending Perl: 21.3. Extending Perl (Using C from Perl)

extensions, creating: 21.3.2. Creating Extensions

32.1.13. Perl Language Extensions and Internals

using functions from external C libraby: 21.3.4. Using Functions from an External C Library

XSUB input and output: 21.3.3. XSUB Input and Output

XSUBs and XS language, wrapping Perl in: 21.3.1. XS and XSUBs

external subroutines, portability of: 25.6. External Subroutines (XS)

extracting substrings: 29.2.168. substr

ExtUtils::Command module: 32.1.17. Module Installation Support

ExtUtils::Embed module: 21.4.1. Compiling Embedded Programs

32.1.17. Module Installation Support

ExtUtils::Install module: 32.1.17. Module Installation Support

ExtUtils::Installed module: 32.1.17. Module Installation Support

ExtUtils::Liblist module: 32.1.17. Module Installation Support

ExtUtils::MakeMaker: 22.3. Creating CPAN Modules

22.3. Creating CPAN Modules

(see also MakeMaker)

ExtUtils::MakeMaker module: 32.1.17. Module Installation Support

ExtUtils::Manifest module: 32.1.17. Module Installation Support

ExtUtils::Mkbootstrap module: 32.1.17. Module Installation Support

ExtUtils::Mksymlists module: 32.1.17. Module Installation Support

ExtUtils::MM_Cygwin module: 32.1.17. Module Installation Support

ExtUtils::MM_OS2 module: 32.1.17. Module Installation Support

ExtUtils::MM_Unix module: 32.1.17. Module Installation Support

ExtUtils::MM_VMS module: 32.1.17. Module Installation Support

ExtUtils::MM_Win32 module: 32.1.17. Module Installation Support

ExtUtils::Packlist module: 32.1.17. Module Installation Support

ExtUtils::testlib module: 32.1.17. Module Installation Support

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