I agree that layering has real cost there as anything else does, but I still think layering is extreamly important to a clear design, as long as you do it with a good PLAN. Lots of troubles are caused by bad designs under the cover of good principles, not those good principles themselves.
From time to time, I see people copy and paste code from one module to another, and then slightly modify them. Layering is usually the best way to save people's life under this kind of situation. and make it more beautiful. Copy and paste makes programmer's life miserable, as now you might have to change whole bunch of code for a slight modification that you would be able to make at a single point if you layering properly.
With layering in mind, now you start to establish the sense of digging the similarity between modules that usuaully looks totally unrelated, and an entire new world is opened for you and the people work with you.
Well the copy and paste stuff is just one extream (and most simple) example, but the most miserable one. As now programmers are turned into production lines, instead of human being who want to spend more time thinking and dreaming.
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Read Where should I post X? if you're not absolutely sure you're posting in the right place.
Please read these before you post! —
Posts may use any of the Perl Monks Approved HTML tags:
Outside of code tags, you may need to use entities for some characters:
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.
| & || & |
| < || < |
| > || > |
| [ || [ |
| ] || ] ||