TweetFollow Us on Twitter

Jun 98 Viewpoint

Volume Number: 14 (1998)
Issue Number: 6
Column Tag: Viewpoint

June 1998 Viewpoint

by Nicholas C. "nick.c" DeMello <editor@mactech.com>

Creating great software requires an odd mixture of humility and arrogance. The art of programming involves studying complex behaviors, accomplishing them with efficient logical processes, and expressing that logic so simply and clearly that even a machine can enact it. For someone to consider teaching a hunk of silicon the skill of piloting an airplane, the subtleties of quantum mechanics, or even the simple trick of announcing "hello world"... well, a little arrogant confidence is required. But the best among us temper their confidence with the realization that there is no profit in reinventing the wheel, that we can never foresee all the possible applications of our product, and that bugs happen. The outrageous confidence needed to try something untried and the necessary caution required to turn that something into reliable and efficient code is epitomized by the Mac OS and the modular, extendible program design underlying it. In this issue, MacTech presents a number of articles on modular software design and plug-in technologies. I want to introduce just a few of them here.

It's been estimated that the Lisa project, the precursor of today's Macintosh, took over 200 man years to accomplish. Lisa owed significantly to ground breaking work in the design of the WIMP (windows, icons, mouse, pointer) GUI developed at Xerox. While the WIMP development at Xerox's Palo Alto research center (PARC) was occurring, the term "object-oriented" was being coined in the same facility. PARC developed the Smalltalk language - arguably the purest representation of the object-oriented ideal - at the same time they were working on the WIMP interface. The influence of object oriented design on Xerox's GUI is clear. That same influence affected Lisa and is an integral part of today's Mac OS.

The Macintosh operating system was broken down into a multitude of smaller, simpler goals. Many of these objectives are represented by independent code modules or runtime libraries. By breaking projects down into simple, self-contained and independently compiled objects bugs are isolated and easier to locate, while project goals become clearer and easier to define. It also makes your project adaptable and expandable. Consider all the powerful technologies, never dreamed of by the Lisa engineers, that have been added to the Macintosh operating system.

Your next project may not be as intimidating as writing a new operating system, but then it might feel that way. You probably will apply a modular design to that project, breaking the code down into smaller and more manageable pieces represented by different classes or code files. But, what if you took that a step farther and isolated fundamental logic to a separately compiled removable, replaceable plug-in? Not only would your next update be a little easier, your code base and bug space a little smaller, but I bet you've already started thinking about entirely different logic you could offer as a second plug-in. Rest assured, if you haven't - one of your users will. In this issue, Joe Zobkiw describes the fundamentals of adding a plug-in architecture to your next application. By providing a plug-in architecture you, or your more creative customers, can expand and adapt your product in new and exciting directions.

Or consider the problem from the other side. Perhaps your goal can best be achieved by creating new logic for an existing application. Tools like Resorcerer, FileMaker Pro, Netscape and CodeWarrior offer plug-in architectures and therefore opportunities to tune these powerful tools to your most specific needs. They also offer opportunities in that you can quickly create valuable companion products for existing markets. Photoshop is an essential tool for graphic artists, establishing a huge market for plug-in companion products like Kai's Power Tools and Alien Skin's Eye Candy. To get an idea of how easy it can be to create a plug-in, take a look at Steve Sheets article in this issue on crafting plug-ins for BBEdit - the Swiss army chainsaw of text editors.

Modular design isn't only about plug-ins. Most programmers have a folder someplace. That folder is filled with snippets and example code (a class for implementing a preferences file, a linked list code module, or just a snippet showing how to spin a cursor). Odds are you don't even read most of that code anymore, it's just copy and paste - plug and play. That's the way it should be. Detroit doesn't reinvent the wheel every time they build a new car and we don't need to reinvent Mercutio every time we want to create dynamic menus.

Ramon Felciano's Mercutio MDEF is just one example of elegant and powerful reusable code. Another is the SpriteWorld library. SpriteWorld let's you drop a wealth of powerful and intuitive graphics code right into your application. In this issue Stefan Sinclair explores SpriteWorld libraries and shows you the fundamentals of introducing spectacular effects into your next program. Are you curious what other mechanisms there are for incorporating libraries into your Macintosh programs or offering libraries to other developers? Jeremy Nelson's article provides a concise overview of the possibilities.

The technologies and opportunities for plug-in products and precompiled libraries on the Macintosh are varied and quietly growing. We hope that some of the information you find in this issue will help you to explore and profit from those opportunities. Enjoy!in this issue will help you to explore and profit from plug-ins. Enjoy!

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

Camping With Grandpa (Education)
Camping With Grandpa 1.0 Device: iOS Universal Category: Education Price: $2.99, Version: 1.0 (iTunes) Description: | Read more »
Black Hole Joyrider (Games)
Black Hole Joyrider 1.0 Device: iOS Universal Category: Games Price: $2.99, Version: 1.0 (iTunes) Description: Guide your spacecraft through the gravity well of a powerful black hole using only your retro-thrusters and dwindling fuel... | Read more »
My Koi (Games)
My Koi 1.0 Device: iOS iPhone Category: Games Price: $1.99, Version: 1.0 (iTunes) Description: My Koi is a beautiful and relaxing fish pond app. Customise and name each fish. Feed them daily. Watch them grow. Collect new fish.... | Read more »
Never Gone (Games)
Never Gone 1.0.2 Device: iOS Universal Category: Games Price: $2.99, Version: 1.0.2 (iTunes) Description: ###IMPPORTANT### Never Gone's HD art resources require devices with more than 1GB RAM, so please note that iPhone 4/4s, iPad 2/... | Read more »
INKS. (Games)
INKS. 1.0 Device: iOS Universal Category: Games Price: $1.99, Version: 1.0 (iTunes) Description: From the makers of BAFTA-winning Lumino City comes INKS. INKS updates pinball for a new generation. It combines the joy of pinball with... | Read more »
How to maximise your profits in Bakery B...
Running a bakery can be an expensive venture. You’ll need to continuously upgrade your oven, your kitchen supplies, and even your ingredients to keep customers happy. Most of these renovations in Bakery Blitz cost a pretty penny, but we have a few... | Read more »
How to manage your time in Bakery Blitz
It can be tricky, especially when you risk burning your kitchen to the ground if you forget a cake in the oven, so make sure to use these time management tricks to keep your bakery running smoothly. Don’t collect the money right away [Read more] | Read more »
Model 15 (Music)
Model 15 1.0 Device: iOS iPhone Category: Music Price: $29.99, Version: 1.0 (iTunes) Description: The Moog Model 15 App is the first Moog modular synthesizer and synthesis educational tool created exclusively for iPad, iPhone and... | Read more »
How to deal with wind in Angry Birds Act...
Angry Birds Action! is a physics-based puzzler in which you're tasked with dragging and launching birds around an obstacle-littered field to achieve a set objective. It's simple enough at first, but when wind gets introduced things can get pretty... | Read more »
How to get three stars in every level of...
Angry Birds Action! is, essentially, a pinball-style take on the pull-and-fling action of the original games. When you first boot it up, you'll likely be wondering exactly what it is you have to do to get a good score. Well, never fear as 148Apps... | Read more »

Price Scanner via MacPrices.net

12-inch 128GB iPad Pros on sale for up to $10...
B&H Photo has 12″ 128GB WiFi iPad Pros on sale for up to $100 off MSRP, each including free shipping. B&H charges sales tax in NY only: - 12″ Space Gray 128GB WiFi iPad Pro: $899 $50 off MSRP... Read more
Global Tablet Sales Slump Continues, iPad’s F...
Another miserable showing for the global slate tablet category in calendar Q1/16, with global tablet shipments falling another 1ten percent to 46.5 million units during the according to Strategy... Read more
Revel Systems to Showcase iPad POS Platform w...
Revel Systems, specialists in iPad Point of Sale management solution for brick-and-mortar retail, food businesses and more, today announced that it will showcase its innovative iPad Point of Sale... Read more
13-inch 2.5GHz MacBook Pro on sale for $999,...
B&H Photo has the 13″ 2.5GHz MacBook Pro on sale for $999 including free shipping plus NY sales tax only. Their price is $100 off MSRP. Read more
Apple refurbished 2015 iMacs available for up...
Apple now has a full line of Certified Refurbished 2015 21″ & 27″ iMacs available for up to $350 off MSRP. Apple’s one-year warranty is standard, and shipping is free. The following models are... Read more
Indian Smartphone Market Grows Annually by 12...
India’s smartphone market grew by 12 percent year-over-year, with 24.4 million units shipping in Q1 2016. The top five vendors stayed the same, with Samsung in the lead, followed by Micromax, Intex... Read more
Get Notifications When Your Friend’s Phone Ba...
Calgary, Canada based Stonelight Pictures has announced the release of Battery Share 1.0.1, its new utility for iOS 9 supported devices. The company notes that people are spending more time on their... Read more
11-inch 1.6GHz/128GB MacBook Air on sale for...
Amazon has the current-generation 11″ 1.6GHz/128GB MacBook Air (sku MJVM2LL/A) on sale for $749.99 for a limited time. Their price is $150 off MSRP, and it’s the lowest price available for this model... Read more
Price drops on clearance 2015 13-inch MacBook...
B&H Photo has dropped prices on clearance 2015 13″ MacBook Airs by up to $250. Shipping is free, and B&H charges NY sales tax only: - 13″ 1.6GHz/4GB/128GB MacBook Air (MJVE2LL/A): $799, $200... Read more
Mac minis on sale for up to $100 off MSRP
B&H Photo has Mac minis on sale for up to $100 off MSRP including free shipping plus NY sales tax only: - 1.4GHz Mac mini: $449 $50 off MSRP - 2.6GHz Mac mini: $649 $50 off MSRP - 2.8GHz Mac mini... Read more

Jobs Board

*Apple* Retail - Multiple Positions (US) - A...
Job Description: Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, Read more
Restaurant Manager (Neighborhood Captain) - A...
…in every aspect of daily operation. WHY YOU'LL LIKE IT: You'll be the Big Apple . You'll solve problems. You'll get to show your ability to handle the stress and Read more
Automotive Sales Consultant - Apple Ford Linc...
…you. The best candidates are smart, technologically savvy and are customer focused. Apple Ford Lincoln Apple Valley is different, because: $30,000 annual salary Read more
Restaurant Manager (Neighborhood Captain) - A...
…in every aspect of daily operation. WHY YOU'LL LIKE IT: You'll be the Big Apple . You'll solve problems. You'll get to show your ability to handle the stress and Read more
Simply Mac *Apple* Specialist- Service Repa...
Simply Mac is the largest premier retailer of Apple products in the nation. In order to support our growing customer base, we are currently looking for a driven Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.