The /e Modifier
Some REPLACEMENT strings may need to be evaluated before the REPLACEMENT string is fully complete.
Consider the following by Randal Schwartz:
|
For many years, I used to end my postings in comp.lang.perl.misc with some clever (often obscure) chunk of code that would print out "Just another Perl hacker,". When I discovered the "double eval" trick for substution, I just had to use it in one of these "JAPH" postings. And here's the result: $Old_MacDonald = q#print #; $had_a_farm = (q-q:Just another Perl hacker,:-); See if you can figure out how it works! |
It actually just prints:
| Just another Perl hacker, |