Learning Perl
If you're just getting started with Perl, this is the book you want-whether you're a programmer, system administrator, or web hacker. Nicknamed ""the Llama"" by two generations of users, this bestseller closely follows the popular introductory Perl course taught by the...
| Autor principal: | |
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| Otros Autores: | , |
| Formato: | Libro electrónico |
| Idioma: | Inglés |
| Publicado: |
Beijing ; Sebastopol, California :
O'Reilly Media, Inc
2011.
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| Edición: | 6th ed |
| Materias: | |
| Ver en Biblioteca Universitat Ramon Llull: | https://discovery.url.edu/permalink/34CSUC_URL/1im36ta/alma991009628012406719 |
Tabla de Contenidos:
- Table of Contents; Preface; Typographical Conventions; Code Examples; Safari® Books Online; How to Contact Us; History of This Book; Changes from the Previous Edition; Acknowledgments; From Randal; From Tom; From brian; From All of Us; Chapter 1. Introduction; Questions and Answers; Is This the Right Book for You?; Why Are There So Many Footnotes?; What About the Exercises and Their Answers?; What Do Those Numbers Mean at the Start of the Exercise?; What If I'm a Perl Course Instructor?; What Does "Perl" Stand For?; Why Did Larry Create Perl?; Why Didn't Larry Just Use Some Other Language?
- Is Perl Easy or Hard?How Did Perl Get to Be So Popular?; What's Happening with Perl Now?; What's Perl Really Good For?; What Is Perl Not Good For?; How Can I Get Perl?; What Is CPAN?; How Can I Get Support for Perl?; Are There Any Other Kinds of Support?; What If I Find a Bug in Perl?; How Do I Make a Perl Program?; A Simple Program; What's Inside That Program?; How Do I Compile My Perl Program?; A Whirlwind Tour of Perl; Exercises; Chapter 2. Scalar Data; Numbers; All Numbers Have the Same Format Internally; Floating-Point Literals; Integer Literals; Nondecimal Integer Literals
- Numeric OperatorsStrings; Single-Quoted String Literals; Double-Quoted String Literals; String Operators; Automatic Conversion Between Numbers and Strings; Perl's Built-in Warnings; Scalar Variables; Choosing Good Variable Names; Scalar Assignment; Binary 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
- ExercisesChapter 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; Perl's 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; in List Context; Exercises; Chapter 4. Subroutines
- Defining a SubroutineInvoking 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; Non-Scalar Return Values; Persistent, Private Variables; Exercises; Chapter 5. Input and Output; Input from Standard Input; Input from the Diamond Operator; The Invocation Arguments; Output to Standard Output; Formatted Output with printf; Arrays and printf; Filehandles; Opening a Filehandle; Binmoding Filehandles
- Bad Filehandles
