variable

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$_ the default variable of Perl

Useless use of private variable in void context

Constants and read-only variables in Perl

ref - What kind of reference is this variable?

Variable number of parameters in Perl subroutines

Scalar variables

Detect recursion using state variables

Package variables and Lexical variables in Perl

Static and state variables in Perl

Variable declaration in Perl

"my" variable masks earlier declaration in same scope

Scope of variables in Perl

Variable interpolation - User Input and Output - chomp - video

Scalar values and variables - video

Exercise: parse variable width fields - video

Solution: parse variable width fields - video

Variable names

How much memory do Perl variables use?

Scope of Variables - video