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Perl Variable Contexts

Variable Contexts

Perl data types can be treated in different ways dependin g on the context in which they
are accessed.

Scalar Accessing data items as scalar values. In the case of lists and hashes, $foo[0] and $foo{key}, respectively. Scalars also have numeric, string, and don’t-care contexts to cover situations in which conversions need to be done.
List Treating lists and hashes as atomic objects
Boolean Used in situations where an expression is evaluated as true or false. (Numeric: 0=false; String: null=false, Other: undef=false)
Void Does not care (or want to care) about r eturn value
Interpolative Takes place inside quotes or things that act like quotes


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