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String to number conversion - video
Check several regexes on many strings
String-eval in Perl
Automatic string to number conversion or casting in Perl
Stringification in classic Perl OOP
Strings in Perl: quoted, interpolated and escaped
How to check if string is empty or has only spaces in it using Perl?
Can't use string (...) as an HASH ref while "strict refs" in use at ...
substr outside of string at ...
Sorting mixed strings
String functions: length, lc, uc, index, substr
strings in single quotes - video
What are string and numeric contexts?
How to extract strings from a file
String operators - video
String operators: concatenation (.), repetition (x)
How to check if a string is all upper case (lower case) characters?
Finding a string in a file - video
Lvalue substr - replace part of a string
How to replace a string in a file with Perl