if - use a Perl module if a condition holds
- use if CONDITION, MODULE => ARGUMENTS;
The construct
- use if CONDITION, MODULE => ARGUMENTS;
has no effect unless CONDITION
 is true.  In this case the effect is
the same as of
- use MODULE ARGUMENTS;
Above =>
 provides necessary quoting of MODULE
.  If not used (e.g.,
no ARGUMENTS to give), you'd better quote MODULE
 yourselves.
The current implementation does not allow specification of the required version of the module.
Ilya Zakharevich mailto:perl-module-if@ilyaz.org.