Index: R

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## Index: R

race conditions: 19.4.3. Discussion
rad2deg( ): 2.10.3. Discussion
radians, vs. degrees: 2.10.1. Problem
radiobuttons: 15.14.3. Discussion
rand( ): 2.6.2. Solution
  8.6.2. Solution
random
  email signatures: 16.23. Program: sigrand
  lines in files
    ordering of: 8.7.1. Problem
    selecting: 8.6.1. Problem
  numbers: 2.. Introduction
    biasing: 2.9.1. Problem
    generating: 2.6.1. Problem
  random-access files, updating: 8.13.1. Problem
  random-access I/O: 8.12.1. Problem
  randomizing arrays: 4.18.1. Problem
Range header: 20.17.2. Solution
raw I/O layer: 8.. I/O Layers
  8.11.3. Discussion
read( )
  fixed-length records: 8.. Advanced Operations
    8.15.2. Solution
  I/O layers: 8.. Advanced Operations
  random-access files: 8.12.4. See Also
readdir( ): 9.5.2. Solution
  globbing: 9.6.3. Discussion
reading
  files (see file access file contents)
  records: 7.. I/O Operations
    with pattern separators: 6.7.1. Problem
  Usenet messages: 18.4.1. Problem
reading and writing
  determining whether data can be read or written: 17.3.2. Solution
  hash records to text files: 11.10.1. Problem
  RSS files: 22.9.1. Problem
records: 11.. Records
  binary tree structures: 11.17. Program: Binary Trees
  closures as objects: 11.7.1. Problem
  comma-separated (see CSV)
  constructing: 11.9.1. Problem
  counting in files: 8.2.1. Problem
  fixed-length: 8.. Advanced Operations
    reading: 8.15.1. Problem
  lastlog file: 8.26. Program: laston
  random-access I/O: 8.12.1. Problem
  reading: 7.. I/O Operations
    with pattern separators: 6.7.1. Problem
  reading and writing to text files: 11.10.1. Problem
  variable-length: 8.9.1. Problem
  wtmp file: 8.24. Program: tailwtmp
recursively processing files in directories: 9.7.1. Problem
recv( ), TCP, communicating over: 17.3.2. Solution
redirect( ): 19.7.3. Discussion
ref( ): 11.. References
  13.. Under the Hood
references: 11.. References
  anonymous data: 11.. Anonymous Data
  to arrays: 11.1.1. Problem
  arrays of scalar references: 11.6.1. Problem
  autovivification: 11.. Anonymous Data
  closures as objects: 11.7.1. Problem
  to functions: 11.4.1. Problem
  as hash keys: 13.15.7. Tie Example: Hash That Allows Lookups by Key or Value
  as hash values: 5.13.2. Solution
  to hashes: 11.3.1. Problem
  hashes of arrays: 11.2.1. Problem
    11.2.1. Problem
  iterating over arrays by: 4.6.1. Problem
  to methods: 11.8.1. Problem
  to packages, indirect: 12.16.1. Problem
  passing arrays and hashes by: 10.5.1. Problem
  reference count: 11.. References
  returning subroutines by: 10.9.1. Problem
  to scalars: 11.5.1. Problem
  self-referential structures: 13.13.1. Problem
  symbolic: 1.12.2. Solution
    12.16.2. Solution
  typed: 11.. References
  weak, coping with circular data structures using: 11.15.1. Problem
Regexp::Common module: 2.1.3. Discussion
  6.17.3. Discussion
register_function( ): 22.7.3. Discussion
regular expressions: 6.. Introduction
  backtracking: 6.. The Tricky Bits
    6.16.3. Discussion
  checking strings for valid numbers: 2.1.1. Problem
  commas in numbers: 2.16.3. Discussion
  commenting: 6.4.1. Problem
  copying and substituting: 6.1.1. Problem
  doubled words: 6.16.1. Problem
  eager matching: 6.. The Tricky Bits
  email addresses: 6.19.1. Problem
  extracting ranges of lines: 6.8.1. Problem
  fuzzy matching: 6.13.1. Problem
  \G anchor: 6.14.3. Discussion
  globbing filenames: 9.6.1. Problem
  greedy vs. non-greedy matching: 6.. The Tricky Bits
    6.15.1. Problem
  honoring locale settings: 6.12.1. Problem
  logical functionality in: 6.18.1. Problem
  matching
    abbreviations: 6.20.1. Problem
    letters: 6.2.1. Problem
    within multiple lines: 6.6.1. Problem
    nested patterns: 6.17.1. Problem
    Nth occurrence: 6.5.1. Problem
    shell globs as: 6.9.1. Problem
    from where last pattern ended: 6.14.1. Problem
    words: 6.3.1. Problem
  parsing HTML: 20.18.2. Solution
  pattern-matching modifiers: 6.. Pattern-Matching Modifiers
    Boolean connectives: 6.18.3. Discussion
  progressive matching: 6.5.3. Discussion
  tcgrep program: 6.22. Program: tcgrep
  testing for invalid patterns: 6.11.1. Problem
  urlify program: 6.21. Program: urlify
  useful, list of: 6.23. Regular Expression Grab Bag
RelaxNG schema: 22.. Schemas
rename( ): 9.9.2. Solution
  modifying files with temporary files: 7.15.2. Solution
rename script, example: 9.9.3. Discussion
rep program: 15.12.3. Description
report( ), processing server logs: 20.13.3. Discussion
Representational State Transfer (REST): 18.. Introduction
require operator: 10.. Introduction
  12.. Modules
  trapping errors in: 12.2.1. Problem
Resize( ), thumbnailing images: 15.19.3. Discussion
REST (Representational State Transfer): 18.. Introduction
restarting servers on demand: 17.18.1. Problem
retrieve( ): 11.13.2. Solution
return context, subroutines: 10.6.1. Problem
return statement: 10.10.2. Solution
return values, subroutines
  returning by reference: 10.9.1. Problem
  returning failure: 10.10.1. Problem
  skipping selected: 10.8.1. Problem
reverse( ): 1.7.2. Solution
  4.11.2. Solution
  inverting hashes: 5.9.2. Solution
reversing
  array elements: 4.11.1. Problem
  hashes: 5.9.2. Solution
  words or characters in strings: 1.7.1. Problem
revhash_demo program: 13.15.7. Tie Example: Hash That Allows Lookups by Key or Value
revnum( ): 4.15.3. Discussion
rewinddir( ): 9.5.3. Discussion
rfrm program: 18.15. Program: rfrm
Rich Site Summary (see RSS)
right angle bracket (>), file-access modes: 7.. I/O Operations
  7.1.3. Discussion
rmdir( ): 9.8.3. Discussion
rmtree( ): 9.8.2. Solution
robots for Web traversal: 20.11.1. Problem
rollback( ): 14.15.2. Solution
roman( ): 2.5.3. Discussion
Roman module: 2.5.2. Solution
Roman numerals: 2.5.1. Problem
rounding floating-point numbers: 2.2.1. Problem
RSS (Rich Site Summary): 22.9.1. Problem
  files, reading and writing: 22.9.1. Problem
runtime
  loading modules at: 12.3.1. Problem
  scoping: 10.13.3.3. Using local( ) on parts of aggregates

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