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Spis treści

Learning Perl. 8th Edition eBook -- spis treści

• Preface
  • Typographical Conventions
  • Code Examples
  • OReilly Online Learning
  • How to Contact Us
  • History of This Book
  • Changes from the Previous Edition
  • Acknowledgments
    • From Randal
    • From brian
    • From Tom
    • From All of Us
• 1. Introduction
  • Questions and Answers
    • Is This the Right Book for You?
    • What About the Exercises and Their Answers?
    • What If Im a Perl Course Instructor?
  • What Does Perl Stand For?
    • Why Did Larry Create Perl?
    • Why Didnt Larry Just Use Some Other Language?
    • Is Perl Easy or Hard?
    • How Did Perl Get to Be So Popular?
    • Whats Happening with Perl Now?
    • Whats Perl Really Good For?
    • What Is Perl Not Good For?
  • How Can I Get Perl?
    • What Is CPAN?
    • Is There Any Kind of Support?
    • What If I Find a Bug in Perl?
  • How Do I Make a Perl Program?
    • A Simple Program
    • Whats Inside That Program?
    • How Do I Compile My Perl Program?
  • A Whirlwind Tour of Perl
  • Exercises
• 2. Scalar Data
  • Numbers
    • All Numbers Have the Same Format Internally
    • Integer Literals
    • Nondecimal Integer Literals
    • Floating-Point Literals
    • Numeric Operators
  • Strings
    • Single-Quoted String Literals
    • Double-Quoted String Literals
    • String Operators
    • Automatic Conversion Between Numbers and Strings
  • Perls Built-in Warnings
    • Interpreting Nondecimal Numerals
  • Scalar Variables
    • Choosing Good Variable Names
    • Scalar Assignment
    • Compound Assignment Operators
  • Output with print
    • Interpolation of Scalar Variables into Strings
    • Creating Characters by Code Point
    • Operator Precedence and Associativity
    • Comparison Operators
  • The if Control Structure
    • Boolean Values
  • Getting User Input
  • The chomp Operator
  • The while Control Structure
  • The undef Value
  • The defined Function
  • Exercises
• 3. Lists and Arrays
  • Accessing Elements of an Array
  • Special Array Indices
  • List Literals
    • The qw Shortcut
  • List Assignment
    • The pop and push Operators
    • The shift and unshift Operators
    • The splice Operator
  • Interpolating Arrays into Strings
  • The foreach Control Structure
    • Perls Favorite Default: $_
    • The reverse Operator
    • The sort Operator
    • The each Operator
  • Scalar and List Context
    • Using List-Producing Expressions in Scalar Context
    • Using Scalar-Producing Expressions in List Context
    • Forcing Scalar Context
  • <STDIN> in List Context
  • Exercises
• 4. Subroutines
  • Defining a Subroutine
  • Invoking a Subroutine
  • Return Values
  • Arguments
  • Private Variables in Subroutines
  • Variable-Length Parameter Lists
    • A Better &max Routine
    • Empty Parameter Lists
  • Notes on Lexical (my) Variables
  • The use strict Pragma
  • The return Operator
    • Omitting the Ampersand
  • Nonscalar Return Values
  • Persistent, Private Variables
  • Subroutine Signatures
    • Prototypes
  • Exercises
• 5. Input and Output
  • Input from Standard Input
  • Input from the Diamond Operator
    • The Double Diamond
  • The Invocation Arguments
  • Output to Standard Output
  • Formatted Output with printf
    • Arrays and printf
  • Filehandles
  • Opening a Filehandle
    • Binmoding Filehandles
    • Bad Filehandles
    • Closing a Filehandle
  • Fatal Errors with die
    • Warning Messages with warn
    • Automatically die-ing
  • Using Filehandles
    • Changing the Default Output Filehandle
  • Reopening a Standard Filehandle
  • Output with say
  • Filehandles in a Scalar
  • Exercises
• 6. Hashes
  • What Is a Hash?
    • Why Use a Hash?
  • Hash Element Access
    • The Hash as a Whole
    • Hash Assignment
    • The Big Arrow
  • Hash Functions
    • The keys and values Functions
    • The each Function
  • Typical Use of a Hash
    • The exists Function
    • The delete Function
    • Hash Element Interpolation
  • The %ENV Hash
  • Exercises
• 7. Regular Expressions
  • Sequences
  • Practice Some Patterns
  • The Wildcard
  • Quantifiers
  • Grouping in Patterns
  • Alternation
  • Character Classes
    • Character Class Shortcuts
    • Negating the Shortcuts
  • Unicode Properties
  • Anchors
    • Word Anchors
  • Exercises
• 8. Matching with Regular Expressions
  • Matches with m//
  • Match Modifiers
    • Case-Insensitive Matching with /i
    • Matching Any Character with /s
    • Adding Whitespace with /x
      • Whitespace in character classes
    • Combining Option Modifiers
    • Choosing a Character Interpretation
    • Beginning- and End-of-Line Anchors
    • Other Options
  • The Binding Operator =~
  • The Match Variables
    • The Persistence of Captures
    • Captures in Alternations
    • Noncapturing Parentheses
    • Named Captures
    • The Automatic Match Variables
  • Precedence
    • Examples of Precedence
    • And Theres More
  • A Pattern Test Program
  • Exercises
• 9. Processing Text with Regular Expressions
  • Substitutions with s///
    • Global Replacements with /g
    • Different Delimiters
    • Substitution Modifiers
    • The Binding Operator
    • Nondestructive Substitutions
    • Case Shifting
    • Metaquoting
  • The split Operator
  • The join Function
  • m// in List Context
  • More Powerful Regular Expressions
    • Nongreedy Quantifiers
    • Fancier Word Boundaries
    • Matching Multiple-Line Text
    • Updating Many Files
    • In-Place Editing from the Command Line
  • Exercises
• 10. More Control Structures
  • The unless Control Structure
    • The else Clause with unless
  • The until Control Structure
  • Statement Modifiers
  • The Naked Block Control Structure
  • The elsif Clause
  • Autoincrement and Autodecrement
    • The Value of Autoincrement
  • The for Control Structure
    • The Secret Connection Between foreach and for
  • Loop Controls
    • The last Operator
    • The next Operator
    • The redo Operator
    • Labeled Blocks
  • The Conditional Operator
  • Logical Operators
    • The Value of a Short-Circuit Operator
    • The defined-or Operator
    • Control Structures Using Partial-Evaluation Operators
  • Exercises
• 11. Perl Modules
  • Finding Modules
  • Installing Modules
    • Using Your Own Directories
  • Using Simple Modules
    • The File::Basename Module
    • Using Only Some Functions from a Module
    • The File::Spec Module
    • Path::Class
    • Databases and DBI
    • Dates and Times
  • Exercises
• 12. File Tests
  • File Test Operators
    • Testing Several Attributes of the Same File
    • Stacked File Test Operators
  • The stat and lstat Functions
  • The localtime Function
  • Bitwise Operators
    • Using Bitstrings
  • Exercises
• 13. Directory Operations
  • The Current Working Directory
  • Changing the Directory
  • Globbing
  • An Alternate Syntax for Globbing
  • Directory Handles
  • Manipulating Files and Directories
  • Removing Files
  • Renaming Files
  • Links and Files
  • Making and Removing Directories
  • Modifying Permissions
  • Changing Ownership
  • Changing Timestamps
  • Exercises
• 14. Strings and Sorting
  • Finding a Substring with index
  • Manipulating a Substring with substr
  • Formatting Data with sprintf
    • Using sprintf with Money Numbers
  • Advanced Sorting
    • Sorting a Hash by Value
    • Sorting by Multiple Keys
  • Exercises
• 15. Process Management
  • The system Function
    • Avoiding the Shell
  • The Environment Variables
  • The exec Function
  • Using Backquotes to Capture Output
    • Using Backquotes in a List Context
  • External Processes with IPC::System::Simple
  • Processes as Filehandles
  • Getting Down and Dirty with fork
  • Sending and Receiving Signals
  • Exercises
• 16. Some Advanced Perl Techniques
  • Slices
    • Array Slice
    • Hash Slice
    • Key-Value Slices
  • Trapping Errors
    • Using eval
    • More Advanced Error Handling
  • Picking Items from a List with grep
  • Transforming Items from a List with map
  • Fancier List Utilities
  • Exercises
• A. Exercise Answers
  • Answers to Chapter 1 Exercises
  • Answers to Chapter 2 Exercises
  • Answers to Chapter 3 Exercises
  • Answers to Chapter 4 Exercises
  • Answers to Chapter 5 Exercises
  • Answers to Chapter 6 Exercises
  • Answers to Chapter 7 Exercises
  • Answers to Chapter 8 Exercises
  • Answers to Chapter 9 Exercises
  • Answers to Chapter 10 Exercises
  • Answers to Chapter 11 Exercises
  • Answers to Chapter 12 Exercises
  • Answers to Chapter 13 Exercises
  • Answers to Chapter 14 Exercises
  • Answers to Chapter 15 Exercises
  • Answers to Chapter 16 Exercises
• B. Beyond the Llama
  • Further Documentation
  • Regular Expressions
  • Packages
  • Extending Perls Functionality
    • Writing Your Own Modules
  • Databases
  • Mathematics
  • Lists and Arrays
  • Bits and Pieces
  • Formats
  • Networking and IPC
    • System V IPC
    • Sockets
  • Security
  • Debugging
  • Command-Line Options
  • Built-in Variables
  • References
    • Complex Data Structures
    • Object-Oriented Programming
    • Anonymous Subroutines and Closures
  • Tied Variables
  • Operator Overloading
  • Using Other Languages Inside Perl
  • Embedding
  • Converting find Command Lines to Perl
  • Command-Line Options in Your Programs
  • Embedded Documentation
  • More Ways to Open Filehandles
  • Graphical User Interfaces (GUIs)
  • And More
• C. A Unicode Primer
  • Unicode
  • UTF-8 and Friends
  • Getting Everyone to Agree
  • Fancy Characters
    • Using Unicode in Your Source
    • Fancier Characters
  • Dealing with Unicode in Perl
    • Fancier Characters by Name
    • Reading from STDIN or Writing to STDOUT or STDERR
    • Reading from and Writing to Files
    • Dealing with Command-Line Arguments
    • Dealing with Databases
  • Further Reading
• D. Experimental Features
  • A Short History of Perl Development
    • Perl 5.10 and Beyond
  • Installing a Recent Perl
  • Experimental Features
    • Turning Off Experimental Warnings
    • Enable or Disable Features Lexically
    • Dont Rely on Experimental Features
• Index