[ruby-talk:5842] Re: Symbolic evaluation without quoting trick.

matju wrote:

# > I thought some people here might find the following trick useful,
# > possibly for other sorts of applications.
# >   Re: ANNOUNCE: PySymbolic - Doing Symbolics in Python
# 
# I think there was a 10-line Perl example for that. Maybe in Conway's 
book.

Found it.

It's actually an interesting 1+ page long example of a Roman numerals 
class (in chapter 10 on operator overloading).

(It's another reminder not to make the common mistake of confusing the 
incredible clunkiness of Perl's OO with the considerable power of Perl's 
OO.)

# > > Definitely.  Once again, Python's simplicity, dynamicity, 
regularity,
# > > combine to make the seemingly-impossible into the 
actually-pretty-easy.
# > > What a language...!
# > Well, likewise for Ruby.
# 
# Oh yea? Show me the code :-)

CGACCAAGTCTTATCGCAGTGGAATTGCGCAAGACTCCATTACGTAAGGTCAGGTAGACTCTTGTGACACTGCCATATTTCTTTCGGTAGCACTTTTACCTCCATATAGGTACCACGTGTACTTCGGAGAATATTTTCGACCTCGCATGGGTACTCGCTTGCGGCATCATATCGGTCAGGTTATACAAACCAGCTGGCCGCACCCTACGTCACTGAGCAGCACTCTAGCGAGAAGAGATATGCATTCACGGGAGTACCCTAAGGCACGTTATTTTGGAGGTAAGGGGAGTTCAAGAGAGGGGGGCATAAGACGTGTGTTGGGGCGGAAAATACCTGTCAAGTGTAGAGGATGGCCATTCGATCCTGTTCCAGTCGATAGCGAATTTTCTGCGACTATTTTAAATTCACCGACACCATTGCGACCAGCGCAAGGTACACCACTGCCAACGACTATATGTCGGACCAAATTTTGCAAAATATCTTGAACTTGGAACGGGTAGTATATGGCGCACCTAACGCGGTCCCTGCGTATATCCACATGTCTACGGGCCCTAGATCCGTGAATCAAGCATGTACACCTCAAACGGGAATCTGAGTGGTTCTTGCTTTTTGATGGGCAGAGCCCTATGCGCCGTGATTTATTCTTCTGTAATGCTACATATTGAGCTCTGGATATAAGGGTTCCTTTATTAGGGAAACAAGTGCCGGCGTAGTTTGAAGCGTCTTGTTCGAGTCTTTGGCCACCCCATATGTGTGTCGTAGGTCTCTCGCCTGAGTGCAACCACTCCACTTATTCCCTCTACACATAGAATGTCGATGTCCGTGGTTGTATTCTTCAATTTAGGTATAAGCCTGTTCGAATTCGGTTAAGCCGCTGCCATTACTGATGTGACCTTCCTGTGGGGTCTATGATATTCACTTATTATACGATATTAGGGATTTGGTCTGCTTACATCCTGATAAAGCGGGCACGGCGGCCGATAGGGGTCCA!
!
TTCAGAGCG

Finding the key is left as an exercise for the reader. :-)

Conrad Schneiker
(This note is unofficial and subject to improvement without notice.)