TweetFollow Us on Twitter

Fragment of Your Imaginat
Volume Number:12
Issue Number:7
Column Tag:Book Review

Code Fragments Explained

A shared library of procedure pointers for the resourceful programmer

By Mike Scanlin

A Fragment of Your Imagination:
Code Fragments and Code Resources for Power Macintosh and
Macintosh Programmers

copyright line:By Joe Zobkiw
Addison-Wesley, 1995. ISBN 0-201-48358-0.
500 pages (softback with CD ROM). $39.95.

Have you looked at how big the complete set of Inside Macintosh books is nowadays? My incomplete set is over two feet wide and growing. (I prefer paper to on-line help.) Does the very voluminosity of this documentation, as Frederick Brooks of Mythical Man-Month fame would say, represent some new kind of incomprehensibility? I’m not sure. While I find Inside Macintosh indispensable, I also find it somewhat unwieldy at times. Fortunately, there are other, more readable sources of truth available. A Fragment of Your Imagination is one such source.

This book is a kind of a “Cliff’s Notes” for the Code Fragment Manager. It presents you with discussion and source code for any type of code fragment you might want to write: LDEFs, CDEFs, WDEFs, INITs, XMCDs, cdevs, thngs, plug-ins, etc. As do most programming books, it comes with a CD-ROM bearing all the source code in the book plus a version of CodeWarrior Lite.

There’s little doubt that anyone who wants to write a 68K, PPC or fat code fragment would find it useful to have a piece of working sample code to start with. That’s the primary purpose of this book. It gives you examples of each type of code fragment (LDEF, CDEF, etc.) for each environment (68K, PPC, fat). When you think about it, there’s not much that can be said on the subject of stand-alone code fragments. Once you’ve written one or two you pretty much get it and you’re on your way. But it’s nice to have some hand-holding for that first one, and that’s what this book does.

I like the fact that this book focuses on useful examples. The entire second half of the book is source code listings. The first few chapters cover the basics of the Mixed Mode Manager, Universal Procedure Pointers and Shared Libraries. After that, the author gets right into it by showing you how to write a fat INIT called MenuScript that allows you to replace any menu item in any program with an AppleScript. Each of the next eight chapters covers a different type of code resource, explaining the special cases that come up for each kind of code fragment, along with some example source on how to deal with it.

The examples in the book are reasonable. They are one or two steps above minimum working examples, which is what you want in a code example. If you’re trying to learn how to patch a trap, for instance, you don’t need 1000 lines of unrelated code. You just want the minimum to get the job done, plus a little visual feedback code to make sure it’s being called. The author starts most sections by giving you the bare minimum of code necessary to write a particular type of code fragment. He explains how this bit of glue code makes the code fragment work. Then he adds a bit of unrelated code that does something visual so you’ll know the code is being called and working. It’s a good way to learn what the minimum code for a particular fragment type is.

While I liked the straightforward examples, completeness and screen shots, there are some things I did not like. There are too many cute expressions and attempts at humor. For example: “The termination routine couldn’t be much simpler without breaking a law or two.” I guess the author is trying to make the book friendly or funny, but there are so many of these lines that they come off as a bit childish.

After reading the book I couldn’t help but think that it was physically much larger than it needed to be. The outer margins are over two inches wide, but that space is never used for anything. And the leading (vertical space between lines) in the source code examples is too large. I’d rather see more lines of code on the same page so I don’t have to turn so many pages when studying it. By the same token, the commenting style he uses in the second half of the book really spaces the code out vertically. I’d rather have it more compact. Overall, I couldn’t help but feel that the author was told to write a 500-page book and was only able to produce 300 or so pages.

Despite my nit-picking, I have to say this book does the job it set out to do - inform Macintosh programmers (who have a bit of Mac programming experience already) on how to write many kinds of code fragments. It’s a nice distilled version of the relevant tech notes, DTS examples, and Inside Macintosh. I would definitely recommend it for your first or second code fragment. But if you’ve already done a few of those you probably won’t get much out of this book.

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

Iridient Developer 3.4.1 - Powerful imag...
Iridient Developer (was RAW Developer) is a powerful image-conversion application designed specifically for OS X. Iridient Developer gives advanced photographers total control over every aspect of... Read more
Vallum 3.3.4 - $15.00
Vallum is a little tool that helps you monitor and block apps connections and throttle apps bandwidth. It is able to intercept connections at the application layer, and hold them while you decide... Read more
DiskCatalogMaker 8.2.6 - Catalog your di...
DiskCatalogMaker is a simple disk management tool which catalogs disks. Simple, light-weight, and fast Finder-like intuitive look and feel Super-fast search algorithm Can compress catalog data for... Read more
SoftRAID 5.8.4 - High-quality RAID manag...
SoftRAID allows you to create and manage disk arrays to increase performance and reliability. SoftRAID allows the user to create and manage RAID 4 and 5 volumes, RAID 1+0, and RAID 1 (Mirror) and... Read more
Audio Hijack 3.7.3 - Record and enhance...
Audio Hijack (was Audio Hijack Pro) drastically changes the way you use audio on your computer, giving you the freedom to listen to audio when you want and how you want. Record and enhance any audio... Read more
CleanMyMac X 4.6.15 - Delete files that...
CleanMyMac makes space for the things you love. Sporting a range of ingenious new features, CleanMyMac lets you safely and intelligently scan and clean your entire system, delete large, unused files... Read more
Suitcase Fusion 21.2.1 - Font management...
Suitcase Fusion is the creative professional's font manager. Every professional font manager should deliver the basics: spectacular previews, powerful search tools, and efficient font organization.... Read more
Civilization VI 1.3.6 - Next iteration o...
Civilization® VI is the award-winning experience. Expand your empire across the map, advance your culture, and compete against history’s greatest leaders to build a civilization that will stand the... Read more
Dashlane 6.2042.0 - Password manager and...
Dashlane is an award-winning service that revolutionizes the online experience by replacing the drudgery of everyday transactional processes with convenient, automated simplicity - in other words,... Read more
Airfoil 5.9.2 - Send audio from any app...
Airfoil allows you to send any audio to AirPort Express units, Apple TVs, and even other Macs and PCs, all in sync! It's your audio - everywhere. With Airfoil you can take audio from any... Read more

Latest Forum Discussions

See All

PUBG Mobile has provided yet another upd...
PUBG Mobile has been making a point of publicly mentioning all of their ongoing efforts to vanquish cheating from the popular battle royale. Today two teams within the company have provided updates on their progress. [Read more] | Read more »
Zombieland: AFK Survival is celebrating...
Zombieland: AFK Survival is currently celebrating its one-year anniversary. If you don't quite recognise the name that's because it initially launched as Zombieland: Double Tapper. Anyway, the game is celebrating turning one with two Halloween-... | Read more »
Distract Yourself With These Great Mobil...
There’s a lot going on right now, and I don’t really feel like trying to write some kind of pithy intro for it. All I’ll say is lots of people have been coming together and helping each other in small ways, and I’m choosing to focus on that as I... | Read more »
Genshin Impact Guide - Gacha Strategy: W...
If you're playing Genshin Impact without spending money, you'll always need to be looking for ways to optimize your play to maximize rewards without getting stuck in a position where you're tempted to spend. The most obvious trap here is the game'... | Read more »
Genshin Impact Adventurer's Guide
Hello and well met, fellow adventurers of Teyvat! Check out our all-in-one resource for all things Genshin Impact. We'll be sure to add more as we keep playing the game, so be sure to come back here to check for updates! [Read more] | Read more »
Genshin Impact Currency Guide - What...
Genshin Impact is great fun, but make no mistake: this is a gacha game. It is designed specifically to suck away time and money from you, and one of the ways the game does this is by offering a drip-feed of currencies you will feel compelled to... | Read more »
XCOM 2 Collection on iOS now available f...
The XCOM 2 Collection, which was recently announced to be coming to iOS in November, is now available to pre-order on the App Store. [Read more] | Read more »
Presidents Run has returned for the 2020...
IKIN's popular endless runner Presidents Run has returned to iOS and Android just in time for the 2020 election season. It will see players choosing their favourite candidate and guiding them on a literal run for presidency to gather as many votes... | Read more »
New update for Cookies Must Die adds new...
A new update for Rebel Twins’ platformer shooter Cookies Must Die is coming out this week. The update adds quite a bit to the game, including new levels and characters to play around with. [Read more] | Read more »
Genshin Impact Guide - How to Beat Pyro...
The end game of Genshin Impact largely revolves around spending resin to take on world bosses and clear domain challenges. These fights grant amazing rewards like rare artifacts and ascension materials for weapons and adventurers, but obviously... | Read more »

Price Scanner via MacPrices.net

Apple’s 16″ MacBook Pros are back in stock st...
Apple has Certified Refurbished 2019 16″ MacBook Pros back in stock for up to $420 off the cost of new models, starting at $2039. Each model features a new outer case, shipping is free, and an Apple... Read more
Use our exclusive iPhone Price Trackers to fi...
Looking for a new Apple iPhone 12 or 12 Pro? Perhaps a deal on last year’s iPhone 11? Check out our iPhone Price Tracker here at MacPrices.net. We track new and clearance iPhone prices from Apple as... Read more
Weekend deal: $100 off 13″ MacBook Airs at Am...
Amazon has new 2020 13″ MacBook Airs on sale for $100 off Apple’s MSRP, starting at only $899. Their prices are the lowest available for new MacBooks from any Apple resellers. These are the same 13″... Read more
New 10.9″ 64GB Apple iPad Air on sale for $55...
Amazon has Apple’s new 2020 10.9″ 64GB WiFi iPad Air on sale today for $549.99 shipped. That’s $40 off MSRP. Pre-orders are available today at this discounted price, and Amazon states that the iPad... Read more
Get a clearance 2019 27″ 5K iMac for up to $5...
Apple has Certified Refurbished 2019 27″ 5K iMacs available starting at $1439 and up to $520 off their original MSRP. Apple’s one-year warranty is standard and shipping is free. The following... Read more
AT&T offers the Apple iPhone 11 for $10/m...
AT&T is offering Apple’s 64GB iPhone 11 for $10 per month, for customers opening a new line of service, no trade-in required. Discount is applied via monthly bill credits over a 30 month period.... Read more
Apple’s 2020 11″ iPad Pros on sale today for...
Apple reseller Expercom has new 2020 11″ Apple iPad Pros on sale for $50-$75 off MSRP, with prices starting at $749. These are the same iPad Pros sold by Apple in their retail and online stores: – 11... Read more
Did Apple Drop The Ball By Not Branding Its C...
EDITORIAL: 10.21.20 – In the branding game, your marketing strategy can either be a hit or a miss and the latter is the case for Apple when it missed out on an opportunity to brand its “SE” series of... Read more
27″ 6-core and 8-core iMacs on sale for up to...
Adorama has Apple’s 2020 27″ 6-core and 8-core iMacs on sale today for $50-$100 off MSRP, with prices starting at $1749. Shipping is free: – 27″ 3.1GHz 6-core iMac: $1749, save $50 – 27″ 3.3GHz 6-... Read more
Apple’s 16″ MacBook Pros are on sale for $300...
B&H Photo has 16″ MacBook Pros on sale today for $300-$350 off Apple’s MSRP, starting at $2099. Expedited shipping is free to many addresses in the US. Their prices are among the lowest available... Read more

Jobs Board

*Apple* Mac, Windows & Mobile Device Sup...
Apple Mac, Windows & Mobile Device Support Engineer at created 30-Sep-2020"/> Skip to content **Xerox** at https://xerox.avature.net/en_US/careers Menu ** Apple Read more
Freelance Features Writer ( *Apple* Products...
…interested in iOS, watchOS, iPadOS, macOS? Do you like to explain and teach Apple products to other people with less understanding? If these things sound like you, Read more
Geek Squad *Apple* Consultation Professiona...
**788452BR** **Job Title:** Geek Squad Apple Consultation Professional **Job Category:** Store Associates **Store Number or Department:** 000401-Southland Read more
*Apple* Computing Specialist - Best Buy (Uni...
**789021BR** **Job Title:** Apple Computing Specialist **Job Category:** Store Associates **Store Number or Department:** 000109-West Los Angeles-Store **Job Read more
Chief Medical Officer, St. Mary Medical Cente...
…**Providence is calling a Chief Medical Officer to St. Mary Medical Center in Apple Valley, CA** **.** **THE ROLE** Under the direction of the Chief Executive, the Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.