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). *

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

Little Snitch 4.0.1 - Alerts you about o...
Little Snitch gives you control over your private outgoing data. Track background activity As soon as your computer connects to the Internet, applications often have permission to send any... Read more
Sparkle Pro 2.2.1 - $79.99
Sparkle Pro will change your mind if you thought building websites wasn't for you. Sparkle is the intuitive site builder that lets you create sites for your online portfolio, team or band pages, or... Read more
iWatermark Pro 2.0.0fc4 - Easily add wat...
iWatermark Pro is the essential watermarking app for professional, business, and personal use. Easily secure and protect your photos with text, a graphic, a signature, or a QR watermark. Once added... Read more
Amadeus Pro 2.4 - Multitrack sound recor...
Amadeus Pro lets you use your Mac for any audio-related task, such as live audio recording, digitizing tapes and records, converting between a variety of sound formats, etc. Thanks to its outstanding... Read more
iFFmpeg 6.4.2 - Convert multimedia files...
iFFmpeg is a comprehensive media tool to convert movie, audio and media files between formats. The FFmpeg command line instructions can be very hard to master/understand, so iFFmpeg does all the hard... Read more
EtreCheck 3.4.2 - For troubleshooting yo...
EtreCheck is an app that displays the important details of your system configuration and allow you to copy that information to the Clipboard. It is meant to be used with Apple Support Communities to... Read more
Carbon Copy Cloner 4.1.17 - Easy-to-use...
Carbon Copy Cloner backups are better than ordinary backups. Suppose the unthinkable happens while you're under deadline to finish a project: your Mac is unresponsive and all you hear is an ominous,... Read more
VueScan 9.5.81 - Scanner software with a...
VueScan is a scanning program that works with most high-quality flatbed and film scanners to produce scans that have excellent color fidelity and color balance. VueScan is easy to use, and has... Read more
Hopper Disassembler 4.2.10- - Binary dis...
Hopper Disassembler is a binary disassembler, decompiler, and debugger for 32- and 64-bit executables. It will let you disassemble any binary you want, and provide you all the information about its... Read more
Viber 6.8.6 - Send messages and make cal...
Viber lets you send free messages and make free calls to other Viber users, on any device and network, in any country! Viber syncs your contacts, messages and call history with your mobile device, so... Read more

Latest Forum Discussions

See All

Eden: Renaissance (Games)
Eden: Renaissance 1.0 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0 (iTunes) Description: Eden: Renaissance is a thrilling turn-based puzzle adventure set in a luxurious world, offering a deep and moving... | Read more »
Glyph Quest Chronicles guide - how to ma...
Glyph Quest returns with a new free-to-play game, Glyph Quest Chronicles. Chronicles offers up more of the light-hearted, good humored fantasy fun that previous games featured, but with a few more refined tricks up its sleeve. It's a clever mix of... | Read more »
Catch yourself a Lugia and Articuno in P...
Pokémon Go Fest may have been a bit of a disaster, with Niantic offering fans full refunds and $100 worth of in-game curency to apologize for the failed event, but that hasn't ruined trainers' chances of catching new legendary Pokémon. Lugia nad... | Read more »
The best deals on the App Store this wee...
There are quite a few truly superb games on sale on the App Store this week. If you haven't played some of these, many of which are true classics, now's the time to jump on the bandwagon. Here are the deals you need to know about. [Read more] | Read more »
Realpolitiks Mobile (Games)
Realpolitiks Mobile 1.0 Device: iOS Universal Category: Games Price: $5.99, Version: 1.0 (iTunes) Description: PLEASE NOTE: The game might not work properly on discontinued 1GB of RAM devices (iPhone 5s, iPhone 6, iPhone 6 Plus, iPad... | Read more »
Layton’s Mystery Journey (Games)
Layton’s Mystery Journey 1.0.0 Device: iOS Universal Category: Games Price: $15.99, Version: 1.0.0 (iTunes) Description: THE MUCH-LOVED LAYTON SERIES IS BACK WITH A 10TH ANNIVERSARY INSTALLMENT! Developed by LEVEL-5, LAYTON’S... | Read more »
Full Throttle Remastered (Games)
Full Throttle Remastered 1.0 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0 (iTunes) Description: Originally released by LucasArts in 1995, Full Throttle is a classic graphic adventure game from industry legend Tim... | Read more »
Stunning shooter Morphite gets a new tra...
Morphite is officially landing on iOS in September. The game looks like the space shooter we've been needing on mobile, and we're going to see if it fits the bill quite shortly. The game's a collaborative effort between Blowfish Studios, We're Five... | Read more »
Layton's Mystery Journey arrives to...
As you might recall, Layton's Mystery Journey is headed to iOS and Android -- tomorrow! To celebrate the impending launch, Level-5's released a new trailer, complete with an adorable hamster. [Read more] | Read more »
Sidewords (Games)
Sidewords 1.0 Device: iOS Universal Category: Games Price: $2.99, Version: 1.0 (iTunes) Description: Grab a cup of coffee and relax with Sidewords. Sidewords is part logic puzzle, part word game, all original. No timers. No... | Read more »

Price Scanner via MacPrices.net

13-inch 3.1GHz MacBook Pros on sale for $100...
B&H Photo has the new 2017 13″ 3.1GHz Space Gray MacBook Pros in stock today and on sale for $100 off MSRP including free shipping. B&H charges sales tax in NY and NJ only: – 13″ 3.1GHz/256GB... Read more
Apple refurbished Mac minis available startin...
Apple has Certified Refurbished Mac minis available starting at $419. Apple’s one-year warranty is included with each mini, and shipping is free: – 1.4GHz Mac mini: $419 $80 off MSRP – 2.6GHz Mac... Read more
Apple’s 2017 Back to School Promotion: Free B...
Purchase a new Mac using Apple’s Education discount, and take up to $300 off MSRP. All teachers, students, and staff of any educational institution qualify for the discount. Shipping is free. As part... Read more
Clearance 2016 13-inch MacBook Pros available...
B&H Photo has clearance 2016 13″ MacBook Pros in stock today for up to $220 off original MSRP. Shipping is free, and B&H charges NY & NJ sales tax only: – 13″ 2.9GHz/512GB Touch Bar... Read more
Apple Move Away from White Label Event Apps C...
DoubleDutch, Inc., a global provider of Live Engagement Marketing (LEM) solutions, has made a statement in the light of a game-changing announcement from Apple at this year’s WWDC conference.... Read more
70 Year Old Artist Creates Art Tools for the...
New Hampshire-based developer Pirate’s Moon has announced MyArtTools 1.1.3, the update to their precision drawing app, designed by artist Richard Hoeper exclusively for use with the 12.9-inch iPad... Read more
Sale! New 2017 13-inch 2.3GHz MacBook Pros fo...
Amazon has new 2017 13″ 2.3GHz/128GB MacBook Pros on sale today for $150 off MSRP including free shipping. Their prices are the lowest available for these models from any reseller: – 13″ 2.3GHz/128GB... Read more
13″ 2.3GHz/128GB Space Gray MacBook Pro on sa...
MacMall has the 13″ 2.3GHz/128GB Space Gray MacBook Pro (MPXQ2LL/A) on sale for $1219 including free shipping. Their price is $80 off MSRP. Read more
Clearance 2016 12-inch Retina MacBooks, Apple...
Apple recently dropped prices on Certified Refurbished 2016 12″ Retina MacBooks, with models now available starting at $1019. Apple will include a standard one-year warranty with each MacBook, and... Read more
Save or Share
FotoJet Designer, is a simple but powerful new graphic design apps available on both Mac and Windows. With FotoJet Designer’s 900+ templates, thousands of resources, and powerful editing tools you... Read more

Jobs Board

*Apple* Solutions Consultant (ASC) - Poole -...
Job Summary The people here at Apple don't just create products - they create the kind of wonder that's revolutionised entire industries. It's the diversity of those Read more
SW Engineer *Apple* TV - Apple Inc. (United...
Changing the world is all in a day's work at Apple . If you love innovation, here's your chance to make a career of it. You'll work hard. But the job comes with more Read more
Frameworks Engineering Manager, *Apple* Wat...
Frameworks Engineering Manager, Apple Watch Job Number: 41632321 Santa Clara Valley, California, United States Posted: Jun. 15, 2017 Weekly Hours: 40.00 Job Summary Read more
Product Manager - *Apple* Pay on the *Appl...
Job Summary Apple is looking for a talented product manager to drive the expansion of Apple Pay on the Apple Online Store. This position includes a unique Read more
*Apple* Retail - Multiple Positions - Apple...
SalesSpecialist - Retail Customer Service and SalesTransform 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.