Binding operator

Ruby
1

Hi does ruby have a binding operator like perl ?

by using this RNA =~ s/T/U/g; you can you substitute T´s with U´s in
perl can you do this as easily in ruby ? if so how ?

#!/usr/bin/env ruby

This is the basics of transcribing DNA into RNA

The DNA sequence

DNA = “ACGGGAGGACGGGAAAATTACTACGGCATTAGC”;

Print the DNA onto the screen

print “Here is the starting DNA:\n\n”;

print DNA, “\n\n”

Transcribe the DNA to RNA by substituting all T’s with U´s.

RNA = DNA;

RNA =~ s/T/U/g;

Print the RNA onto the screen

print “Here is the result of transcribing the DNA to RNA:\n\n”;

print RNA, “\n”;

2

Have a look at this:

3

On 02/19/2013 06:35 AM, rich berg wrote:

Print the DNA onto the screen

print “Here is the starting DNA:\n\n”;

print DNA, “\n\n”

Transcribe the DNA to RNA by substituting all T’s with U´s.

RNA = DNA;

This does not make a copy of DNA like you might be expecting, RNA and
DNA point to the same string.

RNA =~ s/T/U/g;

Print the RNA onto the screen

print “Here is the result of transcribing the DNA to RNA:\n\n”;

print RNA, “\n”;

While String#gsub will work, for this simple case you could just use
String#tr (http://rdoc.info/stdlib/core/String:tr):

RNA = DNA.tr(‘T’, ‘U’)

-Justin

4

Thanks Justin