Question:

Explain what is the scalar data and scalar variables in Perl?

Answer:

Scalar in Perl means a single entity like a number or string. So, the Java concept of int, float, double and string equals to perls scalar and the numbers and strings are exchangeable. While scalar variable is used to store scalar data. It uses $ sign and followed by one or more alphanumeric characters or underscore. It is a case sensitive.


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