TweetFollow Us on Twitter

December 94 - LETTERS


In the Macintosh Q & A section of develop Issue 18, I noticed the suggestion to use PenMode(srcBic) for drawing white text on a black background. This is wrong; the desired result will be achieved by TextMode(srcBic). Hope this helps.
-- David Surovell

Thanks for the correction. Say, don't I recognize your name from an article in Issue 19? -- Caroline Rose

As I was reading develop Issue 18, I came across the green slime question in Macintosh Q & A. A friend of mine has been looking for just this recipe, to help keep her preschool-aged daughter amused. However, after reading the recipe, I'm not going to forward it to my friend, because one of the ingredients, borax, is poisonous.

Now, I'm not a toxicologist, nor do I play one on TV, so I don't know exactly how toxic borax is. But I don't want to find out by letting anyone's children play with it (not even the nasty little feral children down the street). And what about people who screw up the recipe? Or decide to experiment with it? You didn't even tell them that straight borax is poisonous. And it's not like there's a big "Mr. Yuk" sticker on the box of Twenty-Mule Team, just those friendly-looking equines.

You and your staff do a fine job of technical presentation, and you have a process for technical review. You might consider a "toxicity review" before you publish any more recipes for nifty stuff that's not inherently edible. Ya never know.
-- Greg Guerin

I volunteer at the Exploratorium, a science museum in San Francisco, and we've been handing out this slime for months to any kid who wants it. The recipe was acquired from a grade-school teacher and is used in schools all over the country.

A chemist at the Exploratorium told me that borax is toxic to about the same degree as soap: if you eat enough of it, you'll probably get a belly ache. Any kid who's old enough to have figured out that soap is yucky to eat is plenty old enough, in my opinion. It's my sincere hope and belief that most develop readers have already reached that stage of maturity.

To be absolutely sure, I called the Poison Control center, and they said that to have any toxic effect at all someone would have to eat an awful lot of it. They even told me I didn't need to bother to wash my hands after handling it. I asked if the soap analogy was a good one, and they said it was accurate.

You might recommend corn starch and cold water to your friend. In the right proportions (just enough water to get it all wet) it makes a very satisfying goop (usually called "oobleck" by teachers, after Dr. Seuss) that's probably more appropriate for very young children.
-- Dave Johnson

I really enjoyed reading Mark Harlan's history of the dogcow in Issues 17 and 18 of develop . He states that Technical Note #31 has not been available for quite a while. That may be so, but something like this Tech Note is hiding inside the THINK Reference databases. Just do a search for "DogCow" and you'll find it.
-- Robert Grimm

Thanks for pointing out the dogcow lore in THINK Reference; I didn't know about that. I especially like the part about how, since the dogcow is two-dimensional, she can face a predator head-on to avoid being seen. Although that defensive maneuver sounds likely enough, keep in mind that the dogcow information in THINK Reference is unauthorized and has nothing to do with the Tech Note. The Tech Note gives lots more information, and we're glad it remains as mysterious as ever.
-- Caroline Rose

After reading Issue 17 of develop , I have a question. I'm not sure what the purpose is in calling KON & BAL's page a Puzzle Page if it requires that you have access to certain obscure beta ROMs in order to solve the puzzle. Perhaps this is just sour grapes because I've never scored above 5? Sure, it still demonstrates various debugging techniques (although I'm not sure that iterative debugging with a reboot after each test is a very useful technique, and this seems quite common in the puzzle pages). But is it really a puzzle?
-- Peter Lewis

KON & BAL chose the Puzzle Page format because they thought it was a fun way to give people debugging tips. They don't expect readers to take the puzzle aspect of it seriously; in fact, you're the first one we've ever heard from who has scored anything besides 0.

None of us were thrilled with Issue 17's puzzle, but, in KON's words, "There was a lot of great stuff about how the Resource Manager works, locking down handles, and other really useful advice. We try to demonstrate efficient and good debugging techniques."

Want a better Puzzle Page? Why not write one yourself? We now accept "guest puzzlers," as you may have noticed. If you've got a good idea for a Puzzle Page, please send it to us at AppleLink DEVELOP.
-- Caroline Rose

I've enjoyed reading develop since the first issue was published. I find that the articles contain a lot of useful technical information.

Normally I try to read each issue when it arrives, but when Issue 16 arrived, it sat for two months while I was finishing a product. About two weeks after the application shipped, a bug was reported where the application would randomly crash with a trashed stack on the PowerBook 180c. We spent a very frustrating Friday trying to reproduce and isolate the bug, but the behavior was inconsistent.

Over the weekend, in an effort to catch up on my reading, I picked up develop Issue 16 and read through it. About an hour after I finished, I thought back on KON & BAL's Puzzle Page, picked the magazine up again, and reread it. Something struck me about the problem they were puzzling over. Their result sounded similar to the problem we were encountering.

On Monday, we ran a series of tests in which we were able to prove that the bug was in Sound Manager 2.0 and disappeared under Sound Manager 3.0. If it hadn't been for the timely coincidence of reading develop and seeing a different manifestation of our bug described, we might have spent a lot longer tracking down the problem. develop saved us a lot of time and frustration.

Thanks for the magazine.

-- Bruce D. Rosenblum

IT PAINS US WHEN YOU DON'T WRITE We welcome timely letters to the editors, especially from readers reacting to articles that we publish in develop . Letters should be addressed to Caroline Rose (or, if technical develop -related questions, to Dave Johnson) at Apple Computer, Inc., One Infinite Loop, M/S 303-4DP, Cupertino, CA 95014 (AppleLink CROSE or JOHNSON.DK). 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

Warhammer 40,000: Freeblade guide - How...
Warhammer 40,000: Freebladejust launched in the App Store and it lets you live your childhood dream of blowing up and slashing a bunch of enemies as a massive, hulking Space Marine. It's not easy being a Space Marine though - and particularly if... | Read more »
Gopogo guide - How to bounce like the be...
Nitrome just launched a new game and, as to be expected, it's a lot of addictive fun. It's called Gopogo, and it challenges you to hoparound a bunch of platforms, avoiding enemies and picking up shiny stuff. It's not easy though - just like the... | Read more »
Sago Mini Superhero (Education)
Sago Mini Superhero 1.0 Device: iOS Universal Category: Education Price: $2.99, Version: 1.0 (iTunes) Description: KAPOW! Jack the rabbit bursts into the sky as the Sago Mini Superhero! Fly with Jack as he lifts impossible weights,... | Read more »
Star Wars: Galaxy of Heroes guide - How...
Star Wars: Galaxy of Heroes is all about collecting heroes, powering them up, and using them together to defeat your foes. It's pretty straightforward stuff for the most part, but increasing your characters' stats can be a bit confusing because it... | Read more »
The best cooking apps (just in time for...
It’s that time of year again, where you’ll be gathering around the dinner table with your family and a huge feast in front of you. [Read more] | Read more »
Square Rave guide - How to grab those te...
Square Rave is an awesome little music-oriented puzzle game that smacks of games like Lumines, but with its own unique sense of gameplay. To help wrap your head around the game, keep the following tips and tricks in mind. [Read more] | Read more »
Snowboard Party 2 (Games)
Snowboard Party 2 1.0 Device: iOS Universal Category: Games Price: $1.99, Version: 1.0 (iTunes) Description: Crowned the best snowboarding game available on the market, Snowboard Party is back to fulfill all your adrenaline needs in... | Read more »
One Button Travel (Games)
One Button Travel 1.0 Device: iOS Universal Category: Games Price: $2.99, Version: 1.0 (iTunes) Description: “To cut a long story short, If you like interactive fiction, just go buy this one.” - “Oozes the polish that... | Read more »
Light Apprentice Volume 1 (Games)
Light Apprentice Volume 1 1.0 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0 (iTunes) Description: Light Apprentice Volume 1 includes Chapters 1 to 4, all gathered in a new exclusive game. When life in the world of... | Read more »
The best games like Animal Crossing on m...
Animal Crossing amiibo Festival is out right now for the Wii U, reminding us of just how much fun that world can be. Or at least to go back and check in on our villages once in a while. [Read more] | Read more »

Price Scanner via

iMobie Releases its Ace iOS Cleaner PhoneClea...
iMobie Inc. has announced the new update of PhoneClean 4, its iOS cleaner designed to reclaim wasted space on iPhone/iPad for use and keep the device fast. Alongside, iMobie hosts a 3-day giveaway of... Read more
U.S. Cellular Offering iPad Pro
U.S. Cellular today announced that it is offering the new iPad Pro with Wi-Fi + Cellular, featuring a 12.9-inch Retina display with 5.6 million pixels — the most ever in an iOS device. U.S. Cellular... Read more
Newegg Canada Unveils Black Friday Deals for...
Newegg Canada is offering more than 1,000 deep discounts to Canadian customers this Black Friday, available now through Cyber Monday, with new deals posted throughout the week. “Black Friday is... Read more
Black Friday: Macs on sale for up to $500 off...
BLACK FRIDAY B&H Photo has all new Macs on sale for up to $500 off MSRP as part of their early Black Friday sale including free shipping plus NY sales tax only: - 15″ 2.2GHz Retina MacBook Pro: $... Read more
Black Friday: Up to $125 off iPad Air 2s at B...
BLACK FRIDAY Walmart has the 16GB iPad Air 2 WiFi on sale for $100 off MSRP on their online store. Choose free shipping or free local store pickup (if available): - 16GB iPad Air 2 WiFi: $399, save $... Read more
Black Friday: iPad mini 4s on sale for $100 o...
BLACK FRIDAY Best Buy has iPad mini 4s on sale for $100 off MSRP on their online store for Black Friday. Choose free shipping or free local store pickup (if available): - 16GB iPad mini 4 WiFi: $299.... Read more
Black Friday: Apple Watch for up to $100 off...
BLACK FRIDAY Apple resellers are offering discounts and bundles with the purchase of an Apple Watch this Black Friday. Below is a roundup of the deals being offered by authorized Watch resellers:... Read more
Black Friday: Target offers 6th Generation iP...
BLACK FRIDAY Save $40 to $60 on a 6th generation iPod touch at Target with free shipping or free local store pickup (if available). Sale prices for online orders only, in-store prices may vary: -... Read more
Black Friday: Walmart and Target offer iPod n...
BLACK FRIDAY Walmart has the 16GB iPod nano (various colors) on sale for $119.20 on their online store for a limited time. That’s $30 off MSRP. Choose free shipping or free local store pickup (if... Read more
Black Friday deals on the Apple Watch and App...
Apple resellers are offering discounts and bundles with the purchase of an Apple Watch this Black Friday weekend. Below is a roundup of the deals being offered by authorized Watch resellers: Apple... Read more

Jobs Board

Storefront Operations Coordinator, *Apple* -...
# Storefront Operations Coordinator, Apple -Latin America Job Number: 43587750 Miami, Florida, United States Posted: Oct. 16, 2015 Weekly Hours: 40.00 **Job Summary** The Read more
*Apple* Enterprise / Government Professional...
# Apple Enterprise / Gove ment Professional Services Engineer Job Number: 42292976 Reston, Virginia, United States Posted: Aug. 18, 2015 Weekly Hours: 40.00 **Job Read more
iOS Wallet & *Apple* Pay Engineer - App...
# iOS Wallet & Apple Pay Engineer Job Number: 40586801 Santa Clara Valley, Califo ia, United States Posted: Nov. 16, 2015 Weekly Hours: 40.00 **Job Summary** The iOS Read more
Software Engineer, *Apple* Watch - Clock Fa...
# Software Engineer, Apple Watch - Clock Face Team Job Number: 44368761 Santa Clara Valley, Califo ia, United States Posted: Nov. 14, 2015 Weekly Hours: 40.00 **Job Read more
Administrative Assistant, *Apple* Online St...
# Administrative Assistant, Apple Online Store Job Number: 43992352 Santa Clara Valley, Califo ia, United States Posted: Nov. 9, 2015 Weekly Hours: 40.00 **Job Summary** Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.