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$_ the default variable of Perl
Variable declaration in Perl
Useless use of private variable in void context
Variable "..." will not stay shared ...
Scalar values and variables - video
Scalar variables
"my" variable masks earlier declaration in same scope
Package variables and Lexical variables in Perl
Scope of Variables - video
Scope of variables in Perl
Constants and read-only variables in Perl
ref - What kind of reference is this variable?
Variable names
Variable number of parameters in Perl subroutines
How much memory do Perl variables use?
Detect recursion using state variables
Static and state variables in Perl
Exercise: parse variable width fields - video
Solution: parse variable width fields - video
Variable interpolation - User Input and Output - chomp - video