Index: E

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## Index: E

-e command-line option, writing filters: 7.14.3.2. Command-line options
\E string metacharacter: 1.18.3. Discussion
/e substitution modifier: 1.12.3. Discussion
  6.. Pattern-Matching Modifiers
each( ): 5.5.2. Solution
  hashes
    merging: 5.11.3. Discussion
    ordering elements of: 5.7.1. Problem
    traversing: 5.5.3. Discussion
eager pattern matching: 6.. The Tricky Bits
echo and password input: 15.10.1. Problem
editing
  files (see file contents)
  input: 15.11.1. Problem
elements
  of arrays (see arrays)
  of hashes (see hashes)
email
  attachments
    extracting: 18.10.1. Problem
    sending: 18.9.1. Problem
  matching valid addresses: 6.19.1. Problem
  random signatures: 16.23. Program: sigrand
  reading with POP3: 18.5.1. Problem
  sending: 18.3.1. Problem
    HTML forms via: 19.12.1. Problem
  sorting: 10.18. Program: Sorting Your Mail
  tracking time path of: 3.11. Program: hopdelta
Email::Valid module: 6.19.3. Discussion
empty
  base class test: 13.10.3. Discussion
  strings (""): 1.. Introduction
Encode module: 8.20.3. Discussion
encoding attribute, XML: 22.. XML Declaration
=end pod directive: 12.20.3. Discussion
__END__ token: 7.12.2. Solution
environment variables
  MHCONTEXTFD: 7.9.3. Discussion
  PERL_UNICODE: 8.21.3. Discussion
Epoch (see date and time values)
equals sign (=)
  =~ operator: 1.1.3. Discussion
  =begin pod directive: 12.20.3. Discussion
  =end pod directive: 12.20.3. Discussion
  => operator: 5.. Introduction
error log, web server: 19.. Behind the Scenes
errors
  (see also exceptions)
  CGI scripts: 19.. Behind the Scenes
    fixing 500 server in: 19.3.1. Problem
    redirecting messages from: 19.2.1. Problem
  controlling for other programs: 16.9.1. Problem
  database: 14.11.1. Problem
  reading STDERR from programs: 16.7.1. Problem
  reporting filenames in: 7.4.1. Problem
  reporting like built-ins: 12.14.1. Problem
  subroutines
    exceptions in: 10.12.1. Problem
    returning failure from: 10.10.1. Problem
  trapping in require and use statements: 12.2.1. Problem
  trapping undefined function calls: 10.15.1. Problem
  turning signals into: 16.22.1. Problem
  web server error log: 20.13.1. Problem
escaping characters: 1.18.1. Problem
eval( )
  with require and use statements: 12.2.2. Solution
  in substitution: 1.12.3. Discussion
    6.. Pattern-Matching Modifiers
events, Tk resize: 15.16.1. Problem
Excel, saving SQL query results to: 14.8.1. Problem
exceptions
  handling in subroutines: 10.12.1. Problem
  trapping undefined function calls: 10.15.1. Problem
exclusive locks: 7.18.3. Discussion
exec( )
  replacing programs: 16.3.2. Solution
  shell escapes: 19.5.3. Discussion
exists( ): 5.2.2. Solution
  multiple hash key values: 5.8.3. Discussion
expanding
  tabs: 1.11.1. Problem
  variables in user input: 1.12.1. Problem
Expect module: 15.13.2. Solution
  controlling programs with: 15.13.1. Problem
EXPN command: 18.16. Program: expn and vrfy
expn program: 18.16. Program: expn and vrfy
@EXPORT array (use pragma): 12.1.3. Discussion
Exporter module: 12.. Import/Export Regulations
  12.1.1. Problem
exporting to modules: 12.. Import/Export Regulations
@EXPORT_OK array (use pragma): 12.1.3. Discussion
@EXPORT_TAGS array (use pragma): 12.1.3. Discussion
expressions, interpolating within strings: 1.15.1. Problem
Extensible Markup Language (see XML)
extension modules, C, building: 12.19.1. Problem
external redirection: 21.4.3. Discussion
extract_bracketed( ), matching nested patterns: 6.17.2. Solution
extracting array subsets: 4.14.2. Solution
extracting from arrays (see arrays)

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