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Perl by Example, Fourth Edition
book

Perl by Example, Fourth Edition

by Ellie Quigley
November 2007
Intermediate to advanced content levelIntermediate to advanced
1008 pages
20h 15m
English
Pearson
Content preview from Perl by Example, Fourth Edition

Chapter 6. Where’s the Operator?

Where’s the Operator?

About Perl Operators

In the real world, there are operators who operate switchboards, computers, bulldozers, tanks, etc. In Perl, operators operate on numbers and strings or a combination of them. Operators are symbols, such as +, -, =, >, <, that produce a result based on some rules. An operator manipulates data objects called operands; e.g., 5 and 4 are operands in the expression 5 + 4. Operators and operands are found in expressions. An expression combines a group of values to make a new value, n = 5 + 4. And when you terminate an expression with a semicolon, you have a complete statement; e.g., n = 5 + 4.

Figure 6.1. Evaluating ...

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ISBN: 9780132381826Purchase book