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$_ the default variable of Perl
Constants and read-only variables in Perl
"my" variable masks earlier declaration in same scope
Scope of variables in Perl
How much memory do Perl variables use?
ref - What kind of reference is this variable?
Variable number of parameters in Perl subroutines
Variable "..." will not stay shared ...
Package variables and Lexical variables in Perl
Scalar variables
Variable declaration in Perl
$a - $b - Special variables when using sort(). Don't use them for anything else besides your sort function!
Useless use of private variable in void context
Detect recursion using state variables
Static and state variables in Perl
Variable interpolation - User Input and Output - chomp - video
Exercise: parse variable width fields - video
Solution: parse variable width fields - video
Scope of Variables - video
Scalar values and variables - video