Abhishek Reddy — Sun, 12 Nov 2006 10:59:04 +0000

StuPeas;210376 wrote: Thanks alot Abhishek. One more question; what if the two packages were in the same file, would 'use' need to be used then ?

That'll work too -- no need for use if they're in the same file.

Whether you should group multiple packages/classes in a file is an interesting question. Some people dislike the Java tradition of putting every class in its own file. In this case, they might prefer to group Person and Fullname. For others, it may make more sense to separate them. Naturally, Perl accepts both approaches.

Personally, I'd separate them because I prefer to put each package in its own file, though not each class. I really don't like how packages are classes in Perl.

StuPeas — Sun, 12 Nov 2006 09:48:19 +0000

Thanks alot Abhishek. One more question; what if the two packages were in the same file, would 'use' need to be used then ?

Abhishek Reddy — Sun, 12 Nov 2006 05:43:45 +0000

1. Why do you think the Fullname object should be blessed into Person? When bless is called in the Person constructor, $self refers to the hash containing FULLNAME and AGE, not the Fullname object itself.

2. You're right. Person.pm must call use Fullname;. If Perl tries compiling that without the use call, it should report an error about stuff not being found. The perltoot docs don't provide complete code.

3. %s represents a substitution flag. How it works is each %s is replaced by subsequent arguments to printf in order. E.g. printf "%s%s", "foo", "bar" will print foobar. In the test script, $him->name is evaluated and substituted at the first %s, and $him->fullname->as_string at the second %s.

It's effectively like printf $him->name . " is really " . $him->fullname->as_string . ". \n"; if that's what you're used to. See the printf doc for more.