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String to number conversion - video
Number Guessing game
Increase numbers in a file
$$, $PROCESS_ID, $PID- The process number of the current script / program / executable.
Random numbers in forked processes
Generate random numbers in Perl with the rand() function
Debug sum numbers - video
Variable number of parameters in Perl subroutines
Reverse an array, a string or a number
How to compare version numbers in Perl and for CPAN modules
Matching numbers using Perl regex
Parse numbered list in Markua
Any number of any characters - video
Exercise: Match numbers with regex - video
Exercise: Roman numbers - video
Exercise: sort SNMP numbers - video
Solution: Match numbers with regex - video
Solution: sort SNMP numbers - video
getprotobynumber
Automatic string to number conversion or casting in Perl