$self->foo(123) # chaining of mutator calls
->bar(456);
this always gave me the heebies because returning the object for success seems a little fragile. What if ->foo() fails? Is it still sensible to return the object? What happens if you have a mutator (well, a not-mutator according to hardburn) that rejects the data presented for whatever reason? If your mutator returns an error code because ->foo(123) is bad input, you wind up with, i.e., "123 is an invalid foo"->bar(456) and your code goes pear-shaped.
Sure, maybe "123 is an invalid foo" is up for argument as a sensible error code. The point is that it seems like a way to limit your object if you need to do any interesting things to communicate failure to back to your user.
-
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.
|