Beginning Perl Programming: From Novice to Professional

© William "Bo" Rothwell of One Course Source, Inc. 2019

William "Bo" RothwellBeginning Perl Programminghttps://doi.org/10.1007/978-1-4842-5055-6_2

2. Scalar Variables

William “Bo” Rothwell¹ 

(1)

San Diego, CA, USA

 

Numeric Literals

A numeric literal is simply any kind of valid number. In Perl the following numeric types are supported:

• Integer (ex: 111)

• Floating point (1.11)

• Hex (0x111)

• Octal (0111)

• Scientific (1.11E3)

While it’s important to know what numeric types Perl supports, it’s also important to understand that Perl doesn’t “treat” these types differently. In fact, all numbers (and strings) are considered to be of one type in Perl: scalar.

Also note that while you can represent scalar values as Hex, Octal, or Scientific, Perl will really treat them ...