TweetFollow Us on Twitter

June 95 - Letters

LETTERS

MORE ON HIDING DIALOG ITEMS
In develop Issue 20, I came across the Q&A (at the bottom of page 107) that recommends using AppendDITL and ShortenDITL to add or remove many dialog items at once rather than using ShowDItem and HideDItem on each item individually. I agree with what's said; however, there's an issue with using AppendDITL that I encountered recently and confirmed with Developer Support.

I've been involved in writing an application that uses 'ictb' resources to define the font for each dialog item. This is necessary for our application to allow globalization. When AppendDITL is called to append items to the dialog, the associated 'ictb' resource for the appended DITL resource isn't loaded. 'ictb' resources are loaded only when NewDialog is called. As a result, AppendDITL can't be used in this case; the show/hide items mechanism must be used instead.

I find develop informative; keep up the good work.
-- Niall Quiggin

Ah, the inevitable exception to the rule. Thanks for pointing it out. -- Dave Johnson

PUZZLE PAGE ERROR: OPENRF
The solution for the Puzzle Page in develop Issue 20 is wrong. It says that the Finder should use OpenRF instead of OpenResFile. OpenRF allows the resource fork to be accessed only as a data stream, and so is useful only if the code wants to copy the entire resource fork without examining its contents. To look at bundles and icons and such, a routine such as HOpenResFile must be used -- which is, in fact, what the Finder calls.

The cause of the bug isn't that the Finder uses fsRdWrPerm, but that it uses fsCurPerm. Inside Macintosh: More Macintosh Toolbox implies that fsCurPerm will work fine if the file is open for writing by someone else, and that read permission to the file will be granted in that case. But unfortunately, fsCurPerm will fail, just like fsRdWrPerm, if the file is already open for writing. To guarantee access to the resource fork of the file, fsRdPerm must be used instead of fsCurPerm. This change was made to the Finder in system software version 7.5.1.

Still, you can't blame Shelley and Byron for getting the wrong answer; they're just dogs, and most dogs don't have access to Finder sources.
-- Greg Anderson, Apple Computer

I conferred with my dogs and they apologized profusely for assuming the inner workings of the Finder that they indeed did not understand. Thanks for the correction.
-- Cary Clark

PUZZLE PAGE STINKS
Has it ever occurred to you how small must be the audience to which your regular contributors KON & BAL are playing? Their Puzzle Page is elitist and intellectually arrogant. Who do you imagine would be privy to the Apple-Eyes-Only knowledge necessary to solve some of these puzzles? As you progress further and further into their morass of micro-minutiae, they indicate that you're less and less clever due to your ever-reducing "score." The whole concept is punitive, pedantic, and boorish. And those invectives at the end of the article continue the process of belittling the reader with the suggestion that, due to your incredibly low score, "Maybe you'd better stick to AppleScript." Ouch! As it happens, AppleScript is an incredibly powerful technology that helps to differentiate the Mac OS from being just another pretty interface. Their attempt at being humorous isn't lost on me, but it failed nonetheless.

Those guys are certainly smart and Apple needs to have people like that on the payroll. But the average fellow in Kansas with a subscription to develop who has adopted Apple as his computing beacon is mocked by such articles and to no real good end. The Puzzle Page is wasted on all but the most inner circle of monks in the Apple sanctum sanctorum.
-- Lance Drake

Your letter was surprising, since we get a lot of good feedback on the Puzzle Page. The puzzle format is just for fun (heh heh). The idea is that you learn something from the debugging techniques. Probably no one ever scores above 0, but that's not really the point. If you haven't already, you might want to take a look at the two letters in Issue 20 on the subject of the Puzzle Page.

Humor is a tricky thing: what some people find hilarious, others find repugnant. I'm sorry the Puzzle Page doesn't work for you. I certainly don't want any of our readers to feel mocked; maybe our publishing this letter will stimulate some dialog on this.

Regarding your specific comment about AppleScript: we couldn't agree more. We hope you'll be pleased with our new regular column, According to Script.

By the way, Apple does indeed need smart people like KON & BAL on the payroll, but they don't work for Apple anymore.

Thanks for writing.
-- Caroline Rose

UNTIDY CODE (GIVE US A BREAK)
Greg Anderson's article in Issue 20 of develop , in the listing on page 67, gave me a probably unintentional insight into the deeper workings of Apple code. Apparently, constructions like this

while (true) {
    do something
    if (somethingelse) break;
}
are acceptable at Apple nowadays. Surely there must be a better, less sloppy and lazy way to do this. (Please don't ask me what's wrong with it; that would force me to go and buy Windoze machines next.)
-- Joost Carpay

You're right; the use of a break statement in conjunction with while (true) is generally considered poor style. Good style would be:

condition = true;
while (condition)
    condition = DoSomething();

While code that appears in develop should of course use good style, the develop staff tells me that they are loath to enforce particular rules; they can, however, make suggestions, and will keep an eye out for this construct in the future. Apple's guidelines for software development recommend against using breaks inside loops and also against using do/while in place of a simple while loop.

The ultimate metric used to judge code should be the clarity of the intent of the algorithm in question. Using good and consistent style certainly improves the readability of code, but I would hope that small infractions of style would be forgiven if the intent of the code remains clear. Code quality is important to Apple, and we're always working at improving the process used to produce system software.
-- Greg Anderson

WHAT DO YOU THINK OF THE PUZZLE PAGE or the rest of develop , for that matter? We welcome timely letters to the editors, especially regarding articles published in develop . Letters should be addressed to Caroline Rose -- or, if technical develop -related questions, to Dave Johnson -- at AppleLink CROSE or JOHNSON.DK. Or you can write to Caroline or Dave at Apple Computer, Inc., 1 Infinite Loop, M/S 303-4DP, Cupertino, CA 95014. All letters should include your name and company name as well as your address and phone number. Letters may be excerpted or edited for clarity (or to make them say what we wish they did). *

 
AAPL
$100.85
Apple Inc.
-0.02
MSFT
$46.43
Microsoft Corpora
-0.33
GOOG
$582.84
Google Inc.
+2.89

MacTech Search:
Community Search:

Software Updates via MacUpdate

Apple Digital Camera RAW Compatibility 5...
Apple Digital Camera RAW Compatibility update adds RAW image compatibility to Aperture 3 and iPhoto '11. For more information on supported RAW formats, see here.Version 5.07: Adds RAW camera... Read more
Transmit 4.4.7 - Excellent FTP/SFTP clie...
Transmit is an excellent FTP (file transfer protocol), SFTP, S3 (Amazon.com file hosting) and iDisk/WebDAV client that allows you to upload, download, and delete files over the internet. With the... Read more
Macgo Blu-ray Player 2.10.8.1715 - 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
Capture One Pro 8.0.0.433 - RAW workflow...
Capture One Pro 8 is a professional RAW converter offering you ultimate image quality with accurate colors and incredible detail from more than 300 high-end cameras -- straight out of the box. It... Read more
Adobe Acrobat Pro 11.0.09 - Powerful PDF...
Adobe Acrobat allows users to communicate and collaborate more effectively and securely. Unify a wide range of content in a single organized PDF Portfolio. Collaborate through electronic document... Read more
Adobe Reader 11.0.09 - View PDF document...
Adobe Reader allows users to view PDF documents. You may not know what a PDF file is, but you've probably come across one at some point. PDF files are used by companies and even the IRS to... Read more
iFFmpeg 4.6.1 - Convert multimedia files...
iFFmpeg is a graphical front-end for FFmpeg, a command-line tool used to convert multimedia files between formats. The command line instructions can be very hard to master/understand, so iFFmpeg does... Read more
NTFS 11.3.62 - 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
OS X Yosemite 10.10 DP8 - Developer Prev...
Note: This is a Developer Preview. You must be a registered Apple Mac Developer to download this update. You can also sign up for the free OS X Beta Program to download and preview public beta... Read more
FotoMagico 4.5 - Powerful slideshow crea...
FotoMagico lets you create professional slideshows from your photos and music with just a few, simple mouse clicks. It sports a very clean and intuitive yet powerful user interface. High image... Read more

Latest Forum Discussions

See All

Light in the Dark Review
Light in the Dark Review By Nadia Oxford on September 17th, 2014 Our Rating: :: LIGHT 'EM UP UP UPUniversal App - Designed for iPhone and iPad Light in the Dark is an interesting and challenging puzzle game with some amusing bits... | Read more »
ETA for iOS 8 Introduces Today View Exte...
ETA for iOS 8 Introduces Today View Extension and is Having a 50% Off Sale Posted by Jessica Fisher on September 17th, 2014 [ permalink ] | Read more »
Get Ready to Hit the Ice – NHL 2K is Com...
Get Ready to Hit the Ice – NHL 2K is Coming to the App Store Soon Posted by Jessica Fisher on September 17th, 2014 [ permalink ] 2K announced today that they are bringing NHL 2K< | Read more »
Readdle Adds Tons of iOS 8 Updates for A...
Readdle Adds Tons of iOS 8 Updates for All Readdle Apps Posted by Jessica Fisher on September 17th, 2014 [ permalink ] With the iOS 8 dropping today, Readdle has dramatically | Read more »
Let it Rainbow Review
Let it Rainbow Review By Jennifer Allen on September 17th, 2014 Our Rating: :: SIMPLE COLORSiPhone App - Designed for the iPhone, compatible with the iPad A little too simple for extended sessions, Let It Rainbow is still a cute... | Read more »
Goat Simulator (Games)
Goat Simulator 1.0.1 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0.1 (iTunes) Description: Goat Simulator is the latest in goat simulation technology, bringing next-gen goat simulation to YOU. You no longer have to... | Read more »
Almightree: The Last Dreamer Review
Almightree: The Last Dreamer Review By Blake Grundman on September 17th, 2014 Our Rating: :: CLIMBING HIGHERUniversal App - Designed for iPhone and iPad Can this Zelda-inspired platformer reach new heights of success?   | Read more »
Zynga Unveils First Look at Looney Tunes...
Zynga Unveils First Look at Looney Tunes Dash! Posted by Ellis Spice on September 16th, 2014 [ permalink ] Be vewy, vewy qwiet. I’m hunting wunners featuwing wabbits, and luckily, it’s duck season wunner season. | Read more »
Guardians on the Go – How to Connect to...
At this point I’m relatively certain most of the country is familiar with Destiny. And for those looking to augment their game a bit, Bungie has changed their Bungie Mobile Companion App to Destiny Companion. | Read more »
Kunin Review
Kunin Review By Jordan Minor on September 16th, 2014 Our Rating: :: SHURIKEN DO ITUniversal App - Designed for iPhone and iPad Kunin is a nervous test of ninja reflexes.   Developer: Dodreams Price: FREE Version Reviewed: 1.0.1... | Read more »

Price Scanner via MacPrices.net

Logitech Bluetooth Multi-Device Cross-Platfor...
Logitech has an enviable track record of making some of the best computer keyboards and mice. At least in my estimation, the best freestanding keyboards I’ve ever used have been Logitech units,... Read more
Roundup of Apple refurbished iPad Airs and iP...
Apple is offering Certified Refurbished iPad Airs for up to $140 off MSRP. Apple’s one-year warranty is included with each model, and shipping is free. Stock tends to come and go with some of these... Read more
Sprint offers 16GB iPad mini for $199.99 with...
Sprint is offering 1st generation 16GB iPad minis for $199.99 with a 2-year service agreement. Standard MSRP for this iPad is $429. Their price is the lowest available for this model. Read more
2.5GHz Mac mini remains on sale for $549, sav...
B&H Photo has the 2.5GHz Mac mini on sale for $549.99 including free shipping. That’s $50 off MSRP, and B&H will also include a free copy of Parallels Desktop software. NY sales tax only. Read more
Apple refurbished iMacs available for up to $...
The Apple Store has Apple Certified Refurbished iMacs available for up to $300 off the cost of new models. Apple’s one-year warranty is standard, and shipping is free. These are the best prices on... Read more
13″ 2.5GHz MacBook Pro offered for $100 off M...
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
Free GIMP Professional Grade Graphics App Ver...
The latest 2.8.14 version of the oddly-named GIMP (acronym for: GNU Image Manipulation Program) open source, high-end image editing and creation alternative to Adobe’s Photoshop and refuge from... Read more
Apple Announces Record Pre-orders for iPhone...
Apple has released metrics showing a record number of first day pre-orders of iPhone 6 and iPhone 6 Plus, with over four million sold in the first 24 hours. Demand for the new iPhones exceeds the... Read more
10% off iPhone 6 and 6 Plus Otterbox cases
Get 10% off on popular Otterbox iPhone 6 and iPhone 6 Plus cases at MacMall through September 19th. Use code OTTERBOX10 to see the discount. Read more
15-inch MacBook Pros on sale for up to $125 o...
Amazon has the new 2014 15″ Retina MacBook Pros on sale for up to $125 off MSRP including free shipping: - 15″ 2.2GHz Retina MacBook Pro: $1899.99 save $100 - 15″ 2.5GHz Retina MacBook Pro: $2374... Read more

Jobs Board

*Apple* Retail - Multiple Positions (US) - A...
Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, you're also the Read more
*Apple* Retail - Multiple Positions (US) - A...
Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, you're also the Read more
*Apple* Retail - Multiple Positions (US) - A...
Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, you're also the Read more
*Apple* Retail - Multiple Positions (US) - A...
Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, you're also the Read more
*Apple* Retail - Multiple Positions (US) - A...
Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, you're also the Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.