TweetFollow Us on Twitter

November 91 - BAMADA Notes

BAMADA Notes

James Plamondon

AUGUST-Larry Rosenstein

An audience of 75 was treated to an evening with Larry Rosenstein, MacApp Wizard, at the August meeting of the Bay Area MacApp Developers Association.

Rosenstein is one of the authors of the original version of MacApp, and was deeply involved with the Lisa Toolkit before that. More recently, he co-wrote the book Programming with MacApp [in C++] from Addison-Wesley, along with David Wilson and Dan Schafer. Lately, he's been looking a little Pink, though he won't say why.

Windows?

The meeting began with a grumble from the assembled host regarding the presence of a traitor in their midst-namely, me-who had abandoned the Mac to program for Windows. After arguing among themselves for a while, trying to decide whether I was a turncoat, a heretic, or a pioneer, the audience collectively decided that there wasn't a term foul enough to describe my actions. My protests that I was just taking a sabbatical from the Mac, and would be back in a year, were grudgingly accepted. Later, privately, many attendees said (in hushed whispers, so that none would overhear) that they, too, were under pressure to produce Windows versions of their software, and that they wouldn't mind getting a travelogue of my journeys in Windows land. Watch for such a series in a Mac programming magazine near you.

While we were on the subject, I informally broached the question of whether MADA's charter should be expanded to include frameworks for Windows. It was hard to decide which response was louder-the hisses or the boos. Either way, the idea was universally detested. Having MADA become one rib of an umbrella organization which covered lots of frameworks was more acceptable, so long as FrameWorks didn't get cluttered up with Windows stuff.

Filtered Commands

Finally, we were ready for Rosenstein's presentation. He began with filtered commands, which are a mechanism to reduce the amount of information that one must maintain in order to undo or redo a command. Rosenstein used the example of a complex styled text document containing hundreds of different style runs-a little bold Times, some 9-point Zapf Chancery, a dash of italic Courier, etc. If the user selected all of the document's styled text, and set it to plain Geneva 12, saving the previous state of the document-with all of its different styles-could take a lot of space. In the worst case, you might have to save off the entire old version of the document.

Filtered commands solve this problem. Instead of saving the pre-change data, and then altering the document in accordance with the command, the command installs a filter into each affected piece of data which makes it look as if it has been changed. In the example above, each style run object would be filtered to look like it was plain Geneva 12. To undo the command, the filter is simply removed; to redo it, the filter is reapplied.

Filtered commands simplify the implementation of Undo and Redo significantly, and reduce storage requirements at the cost of slightly slower data access times. See chapter 25 of Rosenstein's excellent book for a detailed description of the mechanics of the approach.

Streams

After Rosenstein described filtered commands, he moved on to streams, which are a major feature of MacApp 3. By using streams for data I/O, you can handle input and output more abstractly; for instance, you can stream to a file or to the clipboard with equal ease. Streams are discussed in detail in chapter 22 of Rosenstein's book.

The TStream class is responsible for reading and writing bytes, or aggregates of bytes, from and to "something." TStream's subclasses implement the abstract methods that do the actual reading and writing. For example, a TFileStream implements reading and writing to a file, while a THandleStream implements reading and writing to a memory block. A TCountingStream doesn't read or write anything-it just counts the bytes that it was told to write. This is particularly useful when trying to find out if there's enough room on a disk to hold a file, before you actually write it out via a TFileStream.

Rosenstein did a great job presenting his material to a interested and knowledgeable audience. We look forward to a presentation on Pink at his earliest convenience. (Would you care to schedule that now, Larry?)

September- Solution-based modelling

At the September BAMADA meeting, Jeff Alger introduced a crowd of over fifty attendees to Solution-Based Modeling (SBM). SBM is the subject of a book forthcoming from Addison-Wesley entitled "Developing Object-Oriented Software for the Macintosh," and is the brainchild of Alger and his coauthor, Neal Goldstein.

SBM is an integrated, lifecycle approach to software development. It emphasizes the importance of involving marketing, management, and other diverse groups in the software development process from the outset. Where other methodologies-most notably the "waterfall" model, in which analysis "flows" into design, design into programming, and so on-look at software development as a series of separate stages, SBM takes a more incremental approach.

Despite the title of Alger and Goldstein's book, SBM is a platform and language- independent methodology. (The publisher insisted that the word "Macintosh" be in the title; their studies have shown that people prefer to buy books directed at a specific platform. This led Goldstein to suggest that the book be titled "Platform-independent Software Development for the Macintosh," to be followed by "…for Windows," "…for OSF/Motif," etc.)

Although one could, in theory, do the actual programming in a non-object-oriented language, SBM takes a very object-oriented approach to analysis and design.

Involving non-programmers in design decisions

Project scheduling and task duration estimation are key to the success of any project. SBM addresses this issue in part by involving non-programmers in the design decisions as early as possible. Doing so leads these participants to buy into the process, so that they can better understand the technical tradeoffs. In fact, throughout the talk, Alger emphasized the need to get those darn marketing types involved as early as possible, so the programmers had a chance to pound some sense into them. I wonder if the talk would have been different, if given to a marketing group…

Visual Design Language

SBM introduces yet another graphical analysis and design language to the OOP world. Aptly named the Visual Design Language (VDL), it has the singular advantage of having been designed by graphic artists, rather than programmers. As a result, it is easier to read and understand than any other I've seen (such as the Booch Notation). Various other graphical design languages have left a bad taste in my mouth, but VDL looks yummy. No application yet exists to facilitate the process of writing in VDL, but we were assured such an application would exist in the near future. But then, I'm still waiting for Eiffel for the Macintosh.

SBM's strengths

SBM admits a number of unpleasant truths that are often ignored. For example, it admits that half of the project cycle will be taken up with analysis, and emphasizes the advantages of doing this analysis up front, rather than in numerous mid-course corrections. (Once a boss of mine asked me what I was doing "staring off into space." "Thinking," I answered. He actually replied, with some heat, "Well, get back to work!" I hope that guy discovers SBM, for the sake of his current employees.)

If half of the available time is taken up in analysis, half of what's left goes to design, with the remainder going to actual programming. Alger commented that this breakdown makes code reuse look less important in the long run; under SBM, reuse of analysis is twice as important as reuse of code. On the other hand, application frameworks like MacApp encapsulate not just code, but analysis and design, as well-so the "win" from using MacApp applies to all project phases, not just programming. Look at MacApp's failure handling, memory management, and command mechanisms, for example. Most pre-MacApp applications didn't have anything like them-not because they were so hard to code, but because they were so hard to invent. (And let me tell you, so far, no Windows framework I've seen has come close to these capabilities.)

Solution-Based Modeling (SBM) looks like a good tool for use in large, real-world software development projects. If you've found that there's more to the management of your multi-programmer projects than just using Projector, spend some time with Alger and Goldstein's book when it becomes available.

Upcoming in October- Feedback to the MacApp Team

At the BAMADA meeting in October, we'll have the MacApp Team at our mercy; the evening's topic will be "Feedback to the MacApp Team." Bring neither rotting fruit nor laurel accolades, but rather your comments, suggestions, bugs, gotchas, fixes, workarounds, feature requests, insolvable dilemmas, and ingenious solutions. Whether your comments relate to MacApp 2.0 (yes, there are still a lot of people using MacApp 2.0), 3.0, or X.x, bring them over and let's see what we can do with them. We may even get demos of the latest versions of Mouser and ViewEdit, if we're sufficiently polite.

As (almost) always, we'll be meeting on the fourth Wednesday of the month-October 23rd-at 7pm, in the Mountain View room of Apple's City Center Four building, on the southwest corner of Stevens Creek and De Anza Boulevards (at 20450 Stevens Creek), in Cupertino. Come early to grab a good seat. Be there or be tetrahedral!

 
AAPL
$102.99
Apple Inc.
+0.52
MSFT
$44.38
Microsoft Corpora
-0.50
GOOG
$532.71
Google Inc.
+6.17

MacTech Search:
Community Search:

Software Updates via MacUpdate

Evernote 5.6.2 - Create searchable notes...
Evernote allows you to easily capture information in any environment using whatever device or platform you find most convenient, and makes this information accessible and searchable at anytime, from... Read more
OmniOutliner 4.1.3 - Organize your ideas...
OmniOutliner is a flexible program for creating, collecting, and organizing information. Give your creativity a kick start by using an application that's actually designed to help you think. It's... Read more
BBEdit 11.0 - Powerful text and HTML edi...
BBEdit is the leading professional HTML and text editor for the Mac. Specifically crafted in response to the needs of Web authors and software developers, this award-winning product provides a... Read more
Apple Security Update 2014-005 - For OS...
Apple Security Update is recommended for all users and improves the security of Mac OS X. For information on the security content of this update, please visit this website: http://support.apple.com/... Read more
EyeTV 3.6.6 - Watch and record TV on you...
EyeTV brings a rich TV experience to your Mac. Watch live TV on your Mac. Pause, rewind, and record whenever you want. EyeTV gives you powerful control over what you watch and how you watch it. Put... Read more
RapidWeaver 6.0 - Create template-based...
RapidWeaver is a next-generation Web design application to help you easily create professional-looking Web sites in minutes. No knowledge of complex code is required, RapidWeaver will take care of... Read more
NTFS 12.0.39 - Provides full read and wr...
Paragon NTFS breaks down the barriers between Windows and OS X. Paragon NTFS effectively solves the communication problems between the Mac system and NTFS, providing full read and write access to... Read more
RestoreMeNot 2.0.3 - Disable window rest...
RestoreMeNot provides a simple way to disable the window restoration for individual applications so that you can fine-tune this behavior to suit your needs. Please note that RestoreMeNot is designed... Read more
Command-C 1.1.5 - Clipboard sharing tool...
Command-C is a revolutionary app which makes easy to share your clipboard between iOS and OS X using your local WiFi network, even if the app is not currently opened. Copy anything (text, pictures,... Read more
Macgo Blu-ray Player 2.10.9.1750 - Blu-r...
Macgo Mac Blu-ray Player can bring you the most unforgettable Blu-ray experience on your Mac. Overview Macgo Mac Blu-ray Player can satisfy just about every need you could possibly have in a Blu-ray... Read more

Latest Forum Discussions

See All

Worldly (Games)
Worldly 1.2 Device: iOS Universal Category: Games Price: $2.99, Version: 1.2 (iTunes) Description: | Read more »
Pro Strategy Football 2014 (Games)
Pro Strategy Football 2014 2014.141001 Device: iOS Universal Category: Games Price: $4.99, Version: 2014.141001 (iTunes) Description: Take the proven strategy of the PSF franchise and add in Casual Play, improved graphics and... | Read more »
Super Glyph Quest (Games)
Super Glyph Quest 1.01 Device: iOS Universal Category: Games Price: $2.99, Version: 1.01 (iTunes) Description: Adventure is back Questers! Combine elemental glyphs together to cast powerful spells and vanquish adorable monsters in... | Read more »
Fighting Fantasy: Caverns of the Snow Wi...
Fighting Fantasy: Caverns of the Snow Witch 1.0 Device: iOS Universal Category: Games Price: $5.99, Version: 1.0 (iTunes) Description: Travel to Northern Allansia’s perilous Icefinger Mountains to defeat the wicked Snow Witch in this... | Read more »
Star Warfare 2: Payback Review
Star Warfare 2: Payback Review By Blake Grundman on October 22nd, 2014 Our Rating: :: ONE-TRICK PONYUniversal App - Designed for iPhone and iPad Unfortunately, it doesn’t take long for Star Warfare 2’s free-firing fun to turn into... | Read more »
TinType by Hipstamatic (Photography)
TinType by Hipstamatic 1.0 Device: iOS iPhone Category: Photography Price: $.99, Version: 1.0 (iTunes) Description: Create hauntingly beautiful, soul capturing portraits with TinType by Hipstamatic. Inspired by daguerreotypes,... | Read more »
The Latest Update for Heroes of Dragon A...
The Latest Update for Heroes of Dragon Age Introduces Daily PvE Challenges Posted by Ellis Spice on October 22nd, 2014 [ permalink ] | Read more »
Bee Brilliant Review
Bee Brilliant Review By Jennifer Allen on October 22nd, 2014 Our Rating: :: SAMEY MATCH-3Universal App - Designed for iPhone and iPad Want even more Match-3 gaming and fancy a bee based twist? Bee Brilliant is that game. Don’t... | Read more »
A New Trailer has Been Revealed for Epic...
A New Trailer has Been Revealed for Epic of Kings Posted by Jessica Fisher on October 22nd, 2014 [ permalink ] Dead Mage Inc. has released a new, action-packed trailer for the upcoming Epic of Kings. | Read more »
Find the Line Review
Find the Line Review By Campbell Bird on October 22nd, 2014 Our Rating: :: INSLIDE THE LINESUniversal App - Designed for iPhone and iPad Tease out beautiful line drawings in this unique, free-to-play puzzle game.   | Read more »

Price Scanner via MacPrices.net

Save with Best Buy’s College Student Deals
Take an additional $50 off all MacBooks and iMacs at Best Buy Online with their College Students Deals Savings, valid through November 1st. Anyone with a valid .EDU email address can take advantage... Read more
iPad Air 2 & iPad mini 3 Best Tablets Yet...
The new iPads turned out to be pretty much everything I’d been hoping for and more than I’d expected.”More” particularly in terms of a drinking-from-a-firehose choice of models and configurations,... Read more
Drafts 4 Reinvents iOS Productivity App
N Richland Hills, Texas based Agile Tortoise has announced the release of Drafts 4 for iPhone and iPad. Drafts is a quick capture note taking app with flexible output actions. Drafts 4 scales from... Read more
AT&T accepting preorders for new iPads fo...
AT&T Wireless is accepting preorders for the new iPad Air 2 and iPad mini 3, cellular models, for $100 off MSRP with a 2-year service agreement: - 16GB iPad Air 2 WiFi + Cellular: $529.99 - 64GB... Read more
Apple offering refurbished Mac Pros for up to...
The Apple Store is offering Apple Certified Refurbished 2013 Mac Pros for up to $600 off the cost of new models. An Apple one-year warranty is included with each Mac Pro, and shipping is free. The... Read more
Select MacBook Airs $100 off MSRP, free shipp...
B&H Photo has 2014 a couple of MacBook Airs on sale for $100 off MSRP. Shipping is free, and B&H charges NY sales tax only. They also include free copies of Parallels Desktop and LoJack for... Read more
13-inch 2.5GHz MacBook Pro on sale for $100 o...
B&H Photo has the 13″ 2.5GHz MacBook Pro on sale for $999.99 including free shipping plus NY sales tax only. Their price is $100 off MSRP. Read more
Strong iPhone, Mac And App Store Sales Drive...
Apple on Monday announced financial results for its fiscal 2014 fourth quarter ended September 27, 2014. The Company posted quarterly revenue of $42.1 billion and quarterly net profit of $8.5 billion... Read more
Apple Posts How-To For OS X Recovery
OS X 10.7 Lion and later include OS X Recovery. This feature includes all of the tools you need to reinstall OS X, repair your disk, and even restore from a Time Machine backup. OS X Recovery... Read more
Mac OS X Versions (Builds) Supported By Vario...
Apple Support has posted a handy resource explaining which Mac OS X versions (builds) originally shipped with or are available for your computer via retail discs, downloads, or Software Update. Apple... Read more

Jobs Board

Senior Event Manager, *Apple* Retail Market...
…This senior level position is responsible for leading and imagining the Apple Retail Team's global event strategy. Delivering an overarching brand story; in-store, Read more
*Apple* Solutions Consultant (ASC) - Apple (...
**Job Summary** The ASC is an Apple employee who serves as an Apple brand ambassador and influencer in a Reseller's store. The ASC's role is to grow Apple Read more
Project Manager / Business Analyst, WW *Appl...
…a senior project manager / business analyst to work within our Worldwide Apple Fulfillment Operations and the Business Process Re-engineering team. This role will work Read more
*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
Position Opening at *Apple* - Apple (United...
…customers purchase our products, you're the one who helps them get more out of their new Apple technology. Your day in the Apple Store is filled with a range of Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.