Beefy Boxes and Bandwidth Generously Provided by pair Networks
XP is just a number

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
Yeah, I thought about that. I figured that it more or less violated the flywieght pattern that Abigail was using...

I'm a little confused about why people keep referring to Abigail-II's object implementation as being based on the flyweight pattern.

According to my copy of Design Patterns a flyweight pattern is:

Using sharing to support large numbers of fine-grained objects efficiently

The example they use in the book is character objects in a word processor. Obviously having a separate object for each input character is going to have a huge resource overhead. So, instead, you create a single pool of objects - one per character - and use the same object for every instance of "a", etc.

Another example from my own experience in perl was when I worked on a project that had a large number of database tables that consisited of static data - lookup tables of info.

Rather than spend a lot of time doing a SELECT every time I needed the info I slurped up the entire table, made a pool of static objects, and served up the appropriate one on request.

To be useful flyweights can't have extrinsic state - no context dependant information - just intrinsic state.

So I can't see any relation between flyweights and inside out objects. Does the term mean something different in the perl world? If so - what, and why would accessing the hashes directly violate it?

In reply to Flyweights - different meaning in perl? by adrianh
in thread Yet Another Perl Object Model (Inside Out Objects) by demerphq

Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":

  • 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 or How to display code and escape characters are good places to start.
Log In?

What's my password?
Create A New User
Domain Nodelet?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others about the Monastery: (3)
As of 2022-09-29 17:15 GMT
Find Nodes?
    Voting Booth?
    I prefer my indexes to start at:

    Results (125 votes). Check out past polls.