If the class has a compare method that doesn't work for my current problem,
do I subclass it and create my own maxstr?
If you are referring to my original post, then yes. The Max class abstracts
the algorithm of calculating a maximum of objects - the subclass implements
the comparison in the appropriate context. Im not suggesting this is the best
OO solution, just one that is like the Higher-Order equivalent.
If you meant "Foo.compareTo() doesnt compare Foos like I want",
then the solution depends on (among other things)
how much internal access you need to compute the comparison. There are
quite a few ways this could be approached but to bring it back to my
original point, they are mostly structured and organized - not
hidden un-garbage-collected variables and blind function dereferencing.
What if each object needs a unique compare function?
Then what are you comparing it to? I would have thought similarity
was a prerequisite for comparison.
What if these functions aren't known at compile time?
Closures are compiled too. That is, whether you use gt
(or whatever) is
decided at compile time - there is no runtime dynamic there.
What if there are so many functions that it's difficult to give them all unique and useful names?
They are all called 'compare' - different classes do different things when it is invoked.
update: clarification - Im not sure Im addressing your questions?
time was, I could move my arms like a bird and...
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>
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
Want more info? How to link or
or How to display code and escape characters
are good places to start.