Perl remembers the modules already loaded (%INC) and does not load them again.

Yes, but to be nitpicky that's a feature of require - use is equivalent to BEGIN { require Module; Module->import( LIST ); }, meaning that multiple use statements will still cause the packages' ->import method to be called multiple times, which may make a difference if import does some nonstandard things.

In reply to Re^2: Possible redundant use of "use strict" and "use warnings"? by haukex
in thread Possible redundant use of "use strict" and "use warnings"? by Special_K

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