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Perliness

Notice that method calls do not evaluate within a double-quoted string in Perl. For example, the statement:

print "Name is: ", $dna_seq->get_seq, "\n";

cannot be written as:

print "Name is: $dna_seq->get_seq\n";

Sometimes array-based objects are used in Perl because it is somewhat faster to access an array using defined indices than it is to access a hash with its keys. Despite the faster access, most object-oriented Perl modules create hash-based objectes because hashes are more flexible. It is easier to add additional attributes simply by defining a new string for use as a key than it is to maintain a list of defined array indices.

posted by avilella  # 1:41 PM