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Underlining in Perl and Python - the x and * operator in use

Perl's x operator - yes, that is the letter x - is used to replicate the string on the left the number of times given to the right. "What use is THAT" I have been asked in the past, by delegates feeling that it's a solution looking for a problem. Well - as an example, it's a great way to output just enough "-" characters - or anything else in a fixed with font - to underline a title.


print "Your name? " ;
chop ($name = <STDIN>);
 
print $name,"\n";
print "-" x length($name),"\n";

And here I am testing that ...

Dorothy:qc2 grahamellis$ perl titlit
Your name? Graham
Graham
------
Dorothy:qc2 grahamellis$ perl titlit
Your name? Graham Ellis
Graham Ellis
------------
Dorothy:qc2 grahamellis$

In Python, the * operator on a string object will achieve the same goal:

line = raw_input("your name ")
print line
print "-" * len(line)

And running that ...

Dorothy:qc2 grahamellis$ python pytit
your name Python Trainer
Python Trainer
--------------
Dorothy:qc2 grahamellis$ python pytit
your name Perl Trainer
Perl Trainer
------------
Dorothy:qc2 grahamellis$




(written 2008-04-12 04:59:58)

 
Associated topics are indexed under
P205 - Perl - Initial String Handling
Y108 - Python - String Handling

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