Learning Perl, 5th Edition

Chapter 2. Scalar Data

Section 2.1.  What Is Scalar Data?

Section 2.2.  Numbers

Section 2.3.  Strings

Section 2.4.  Perl's Built-in Warnings

Section 2.5.  Scalar Variables

Section 2.6.  Output with print

Section 2.7.  The if Control Structure

Section 2.8.  Getting User Input

Section 2.9.  The chomp Operator

Section 2.10.  The while Control Structure

Section 2.11.  The undef Value

Section 2.12.  The defined Function

Section 2.13.  Exercises