in reply to Small troubles with references

A good time to link to the freebie chapter from Perl Best Practices. http://www.oreilly.com/catalog/perlbp/chapter/index.html which happens to be the chapter on subroutines.

($_='kkvvttuu bbooppuuiiffss qqffssmm iibbddllffss')
=~y~b-v~a-z~s; print

In Section Seekers of Perl Wisdom