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: 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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