Do we have to have a 'class' and then create an 'object' and then call a method on the object by using specialized syntax?
Yes, that is exactly the point of object oriented programming. For it to be OO programming, you need to be able to create multiple instances of a class with all attributes and functions implied by that class.
Your second examples are not analagous. In the case of $obj->meth();, the programmer is calling a method which belongs to the class, or the instance of that class. In the case of meth($obj), the programmer is passing a variable to a function which has no inherent relationship to the variable passed. The examples may look somewhat similar, but they are doing very different things.
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.
|