integer - Perl pragma to compute arithmetic in integer instead of double
use integer; $x = 10/3; # $x is now 3, not 3.33333333333333333
This tells the compiler that it's okay to use integer operations from here to the end of the enclosing BLOCK. On many machines, this doesn't matter a great deal for most computations, but on those without floating point hardware, it can make a big difference.
See "Pragmatic Modules" in perlmod.
To install lib, copy and paste the appropriate command in to your terminal.
cpanm
cpanm lib
CPAN shell
perl -MCPAN -e shell install lib
For more information on module installation, please visit the detailed CPAN module installation guide.