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Index: E

-e command-line option, and inplace editing : Variable-Length ( Text) Databases
-e operator : The -x File Tests
e, as option to substitute operator : The eval Operator (and s///e)
each( ) : The each Function
- examples of : Using a DBM Hash
echo command, and globbing : Globbing
editors, and updating databases : Variable-Length ( Text) Databases
elements of array : What Is a List or Array?
else keyword : The if/unless Statement
elsif keyword
- More than One Secret Word
- The if/unless Statement
- example of
- - Control Structures
  - Advanced Sorting
email, example of handling : The last Statement
embedding Perl : Embeddible, Extensible
empty array : Literal Representation
empty list : Literal Representation
- as default value for array variable : Variables
- clearing out a hash : The values Function
end of file
- detecting, introduced : Moving the Secret Word List into a Separate File
- with Control-D : <STDIN> as an Array
%ENV variable : Using system and exec
environment variables, controlling through %ENV : Using system and exec
eq operator : Operators for Strings
- example of
- - Adding Choices
  - The Final Programs
Error module : Win32 Extensions
eval( )
- The eval Operator (and s///e)
- What Is a Format?
EventLog module : Win32 Extensions
examples, where to get on-line : Exercises
execute bits : Modifying Permissions
exit status, die( ) and : Slight Diversion: die
exit value : Using Processes as Filehandles
exit( ) : Using Processes as Filehandles
ExpandEnvironmentStrings module : Win32 Extensions
experts, and reading introductory sections : Making It Fair for the Rest
exponential notation, in floating-point numbers : Float Literals
exponentiation operator (**) : Operators for Numbers
expressions
- in a subroutine body : Return Values
- in array literals : Literal Representation
extension modules
- definition of : Library Terminology
- Win32, list of : Win32 Extensions

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