Summary

In this hour , you learned that Perl's most basic type of data is a scalar. Scalars can consist of almost any kind of data. Scalar values can be represented by string or numeric literals. Numeric literals can have many different formats representing integers and floating-point numbers . String literals are sequences of characters surrounded by either double or single quotation marks. Scalar values are stored in scalar variables , which have a dollar sign $ in front of their names . Perl provides operators for performing string manipulation and basic arithmetic.