TweetFollow Us on Twitter

Nov 95 Dialog Box
Volume Number:11
Issue Number:11
Column Tag:Dialog Box

Dialog Box

By Neil Ticktin, Editor-in-Chief/Publisher

Dylan Lives

Jim Gagnon [Dialog Box, September] may have many reasons for not using Dylan. However, “...unreasonable to ... expect success from a proprietary language...” shouldn’t be one of them. [The fact that it isn’t out yet in ready-for-prime-time form is a reason.]

The language spec is in the public domain. The keepers are at CMU...take a look at

http://legend.gwydion.cs.cmu.edu:8001/dylan/

The name Dylan remains with Apple for the purpose of controlling its usage to conforming implementations (aging entertainers who themselves appropriated the name notwithstanding). Apple may someday have a Dylan implementation available for Mac developers. Meanwhile Dylan-like things are “all over” on other platforms (and Macintosh). They aren’t called Dylan because they aren’t yet (as in “Mindy”...Mindy Is Not Dylan Yet).

- John W. Baxter, Port Ludlow, WA

CGIs in C - Some Tweaks

Just a few notes on the article “Writing CGI Applications in C” in the September, 1995 issue of MacTech.

POST arguments can be up to 32k in size (not 24 as indicated on pg. 36). The username and password are both limited to 32 bytes.

You state on pg. 41 that “you can not allocate or release memory within a thread context.” This only applies to pre-emptive threads, which were only implemented in the 68K Thread Manager. Cooperative threads can do what the main application thread can do.

I haven’t looked at the responder code recently, but it used to be missing the call to MaxApplZone() during startup. That becomes quite necessary if the application is going to be dealing with large chunks of data.

Thanks for writing the article - I got some useful ideas from reading it!

- Grant Neufeld

According to John O’Fallon, the point about using memory within a thread context is true, but remeber that a call to MaxApplZone is required before threads allocate memory. See MacTech, November 1994, P. 68 for more details. There are many things that Responder doesn’t do, mainly because Responder is a simplified application to teach CGI programming. - Ed. nst

What Ever Happened to FORTRAN?

First, let me laud your publishing of articles on Prograph CPX. This certainly is the way of the future of programming on the Mac. Indeed it is a natural extension of the Mac’s iconic interface. I’m also delighted to find that there are two books in the offing concerning the programming of CPX. My background has been in the procedural languages, and I need some extra help in making the culture change to OOP.

Second, let me moan. In the past MacTutor and then MacTech gave coverage to the language I use most of the time - FORTRAN (LS FORTRAN). But the past year or so has seen a withering and then total absence of coverage of this language - first Jorg’s Folder, then Jorg, then FORTRANs from the Mail Order. I know it isn’t the most modern language, but there is a considerable opus of large scientific/engineering codes written in FORTRAN which have been debugged over decades. Those who use these codes are first of all rather intimidated by the idea of converting them to other more modern languages due to their size and second do not relish the large amount of time it will take to make the new codes as reliable as the existing FORTRAN codes. So, I don’t think that FORTRAN is dead by any means and it is disappointing not to have Jorg’s Folder any more, especially with the evolution of the Power Mac versions of FORTRAN.

- Stu Cook, Mt St Hilaire, Quebec

[Stu: Our biggest reason for not running FORTRAN articles is that we’ve not seen anything worthy of printing. While FORTRAN articles shouldn’t get the same volume of coverage that C++ or even Pascal should (since there are more users of those languages), it does deserve coverage. We’re open to publishing FORTRAN articles - anyone interested in writing one? - Ed. nst]

But, You Missed The Point

Thank you for your comments at the end of my letter complaining about Symantec’s C++ 8.0, but I think you missed the point of my last comment.

If it would be so hard to write a PowerPC version of THINK Pascal, then how about a compiler that will accept THINK Pascal source code and produce native PowerPC object code. We programmers could do our program development using the present THINK Pascal development environment in the 680x0 emulator.

The THINK Pascal 4.0.2 compiler in the emulator is so much faster than any native C or C++ compiler that there is no real speed penalty for using the present compiler. After we have a working 680x0 program, we can feed the source code to the PowerPC compiler to produce the final code.

Since we will only be using this compiler a few times per program development cycle, it can be a slow dog like the Symantec C and C++ compilers. It doesn’t have to have an editor and debugger like a real development environment. It just has to reliably compile previously proven code that was developed using the present excellent THINK Pascal development environment.

- Fred Johnson, Knoxville, Illinois

[Fred, your prayers have (or will) be answered shortly. Will Iverson at Symantec tells us that Symantec has come to an agreement with Language Systems Corp. LS will provide an Object Pascal compiler that will drop into the Symantec Project Manager environment that should compile THINK Pascal 4.0.2 source code. For more information, contact Language Systems can be reached at http://www.langsys.com/langsys or 800-252-6479.

In addition, there is a version of the Universal Headers modified to work with THINK Pascal that Symantec will make available by the end of October, 1995. These files will be available on the next SDA CD and probably online. Check the MacTech web site (http://www.mactech.com/special.html) or the Symantec site for more information - Ed. nst]

[Many thanks to:

0 Daniel Lidoff, Atascadero, California

JTenor11@aol.com

S.A. Klein, Madison, Wisconsin

Anthony Panos

Luman Wing

Chris F. Riley, Miami, Florida

who also expressed similar opinions about wanting to bring THINK Pascal to Power Macintosh. - Ed. nst]

Brain Damaged Languages?

Fred Johnson hit the nail on the head with his letter, printed in the Dialog Box section of the March issue of MacTech. He praised the editor and linker of THINK Pascal, as compared to those of Symantec C++. But he did not go far enough [to fully expose the languages behind the environments].

I, like Johnson, am somewhat of a Mac hacker. I have programmed the Mac professionally, but I consider myself to be an engineer who programs rather than a programmer. I have programmed using THINK Pascal, THINK C, and Microsoft QuickBASIC.

The BEST feature about THINK Pascal is its debugger, LightsBug. It is superb and clearly better than anything else I have used. (Why hasn’t Symantec made the C/C++ debugger more like LightsBug?) I can examine all global and local variables immediately, without having to first select them for display as in the THINK C debugger. I can see the chain of calling routines, examine register variables, look through the heap, modify variables, and set watch points. And I can also examine and set memory directly.

I also share Johnson’s opinion of C and C++ (or rather, Symantec’s “C with objects”, which is as close as I have gotten to C++.) Both are a mess. For example, what kind of brain-dead language knows the type of a variable in a “printf()” function call, yet makes the programmer specify it again with a formatting control code? I end up debugging my “printf()” function calls. (And that is just one example. I could go on and on.)

I made two serious efforts to learn “C with objects” but gave up in frustration both times. Object Pascal was a breeze after wrestling with C. (Even the manuals bear this out: the “Object Pascal” chapter is 14 pages for version 4 of Pascal; the “Using Objects in Think C” chapter is 37 pages for version 5 of C.)

The Object Pascal implementation of object-oriented programming is simple and elegant. With the use of just 3 additional keywords (“object”, “inherited”, and “override”) and one function (“member()”), I can program in an OOP language. Although I can’t speak from experience with C++, if my experience with “C with objects” is any indication, C++ is a mess.

The world seems to have run after C, but after using both, I don’t know why. C is best described as a cryptic high-level assembler. Pascal is a well-designed high-level language. C’mon Symantec, support Pascal.

- Steve Ross, steve_ross@smtp.svl.trw.com

Criticism of Programming Style

I just received the winning solution to the programmers problem. It uses several goto statements and is not object oriented. As the only programming journal for the Mac it would be nice if you’d adopt a more “progressive” approach to teaching programming. Old notions of “efficiency” are passe.

- Don Winston

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

Luminar 1.0.2 - Powerful, adaptive, conf...
Luminar is the new full-featured image editor that adapts to the way you edit photos. Over 300 essential tools to fix, edit, and enhance your photos with comfort. The future of photo editing is here... Read more
Slack 2.3.3 - Collaborative communicatio...
Slack is a collaborative communication app that simplifies real-time messaging, archiving, and search for modern working teams. Version 2.3.3: Fixed window zoom jumping back-and-forth OS X 10.9... Read more
WhatRoute 2.0.10 - Geographically trace...
WhatRoute is designed to find the names of all the routers an IP packet passes through on its way from your Mac to a destination host. It also measures the round-trip time from your Mac to the router... Read more
Luminar 1.0.2 - Powerful, adaptive, conf...
Luminar is the new full-featured image editor that adapts to the way you edit photos. Over 300 essential tools to fix, edit, and enhance your photos with comfort. The future of photo editing is here... Read more
WhatRoute 2.0.10 - Geographically trace...
WhatRoute is designed to find the names of all the routers an IP packet passes through on its way from your Mac to a destination host. It also measures the round-trip time from your Mac to the router... Read more
Slack 2.3.3 - Collaborative communicatio...
Slack is a collaborative communication app that simplifies real-time messaging, archiving, and search for modern working teams. Version 2.3.3: Fixed window zoom jumping back-and-forth OS X 10.9... Read more
Lens Blur 1.4.3 - True out-of-focus boke...
Lens Blur transforms your existing photo into true SLR-quality out-of-focus bokeh effect! Everyone needs a gorgeous personalized background for a social profile, blog, Web/UI design, presentation, or... Read more
CleanMyMac 3.6.0 - $39.95
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
DEVONthink Pro 2.9.8 - Knowledge base, i...
DEVONthink Pro is your essential assistant for today's world, where almost everything is digital. From shopping receipts to important research papers, your life often fills your hard drive in the... Read more
MacFamilyTree 8.1 - Create and explore y...
MacFamilyTree gives genealogy a facelift: modern, interactive, convenient and fast. Explore your family tree and your family history in a way generations of chroniclers before you would have loved.... Read more

Latest Forum Discussions

See All

Amateur Surgeon 4 Guide: Become the worl...
It's time to wield your trusty pizza cutter again, as Amateur Surgeon has returned with a whole fresh set of challenges (and some old, familiar ones, too). Starting anew isn't easy, especially when all you have at your disposal is a lighter, the... | Read more »
Le Parker: Sous Chef Extraordinaire (Ga...
Le Parker: Sous Chef Extraordinaire 1.0 Device: iOS Universal Category: Games Price: $2.99, Version: 1.0 (iTunes) Description: | Read more »
Telltale Games really is working on a Gu...
Telltale Games' next episodic adventure is indeed Guardians of the Galaxy. A document tied to the voice actors strike suggested that the project was in the work, but now we have direct confirmation following an announcement at the Game Awards that... | Read more »
Amateur Surgeon returns to iOS and Andro...
Amateur Surgeon and its two sequels disappeared from the App Store some time and it was sad days for all. But now, just in time for the holidays, the Adult Swim favorite makes its joyous return in the shape of Amateur Surgeon 4, a remake with... | Read more »
The best board games on mobile
Sometimes you need to ditch all of the high speed, high action games in favor of something a little more traditional. If you don't feel like parting ways from your mobile device, though, there are still plenty of ways to get that old-school fix.... | Read more »
The best Facebook Messenger Instant Game...
Facebook's new Instant Games is now here, meaning you can play games with your friends directly via Facebook. It's a fun new way to connect with friends, of course, but it's also proving to be a solid gaming experience in its own right, with a... | Read more »
You can now play game's on Facebook...
Facebook launched its new Instant Games platform in an exciting new attempt to engage its user base. As a result, you can now play a number of different games directly through Facebook Messenger. All of these games run with HTML5, meaning you play... | Read more »
Apollo Justice Ace Attorney (Games)
Apollo Justice Ace Attorney 1.00.00 Device: iOS Universal Category: Games Price: $.99, Version: 1.00.00 (iTunes) Description: Court Is Back In Session Star as rookie defense attorney, Apollo Justice, as he visits crime scenes,... | Read more »
KORG iWAVESTATION (Music)
KORG iWAVESTATION 1.0 Device: iOS Universal Category: Music Price: $19.99, Version: 1.0 (iTunes) Description: A revolutionary new world of sound.The Wave Sequence Synthesizer for iPad - KORG iWAVESTATION | Read more »
Don't Grind Guide: Tips for becomin...
Don’t Grind is a surprising, derpy little one touch game with fun hand-drawn graphics. The goal is simple -- get the high score without being chopped to bits. That can be tough when you’re not used to the game, and that’s compounded by the fact... | Read more »

Price Scanner via MacPrices.net

Parallels Toolbox 1.3 for Mac Offers 25 Singl...
Parallels has launched Parallels Toolbox 1.3 for Mac, an upgrade that adds five new utilities to the stand-alone application which was released in August and is available exclusively online at http... Read more
OWC Mercury Elite Pro Dual mini Ultra-Portabl...
OWC has introduced the new OWC Mercury Elite Pro Dual mini, a powerful yet ultra-portable dual-drive RAID solution. The new Mercury Elite Pro Dual mini packs phenomenal performance into a small... Read more
Clearance 13-inch Retina MacBook Pros availab...
B&H Photo has clearance 2015 13″ Retina Apple MacBook Pros available for up to $200 off original MSRP. Shipping is free, and B&H charges NY tax only: - 13″ 2.7GHz/128GB Retina MacBook Pro: $... Read more
Roundup of 2016 13-inch 2.0GHz MacBook Pro sa...
B&H has the non-Touch Bar 13″ MacBook Pros in stock today for $50-$100 off MSRP. Shipping is free, and B&H charges NY sales tax only: - 13″ 2.0GHz MacBook Pro Space Gray (MLL42LL/A): $1449 $... Read more
New 13-inch 2.0GHz Space Gray MacBook Pro in...
Adorama has the new 13″ 2.0GHz Space Gray MacBook Pro (non-Touch Bar, MLL42LL/A) in stock for $1499 including a free 3-year AppleCare Protection Plan. Shipping is free, and Adorama charges sales tax... Read more
Finnair Adopts iOS Enterprise iPad Apps from...
Finnair and IBM have announced a first-of-its-kind agreement to utilize iOS enterprise apps from IBM to support the airline’s overall digital transformation. Finnair is focused on Asia-Europe traffic... Read more
Tech21 Launches Evo Go iPhone 7 Case Availabl...
Tech21 has announced the launch of the Evo Go case for Apple iPhone 7 and iPhone 7 Plus, exclusively at T-Mobile. Available online and at participating T-Mobile stores nationwide, Evo Go cases start... Read more
Apple Turns (RED) with More Ways to Join the...
In recognition of World AIDS Day, Apple is offering more ways than ever for customers to join (RED) in its mission to create an AIDS-free generation. Apple is the worlds largest corporate contributor... Read more
Deals on new 15-inch Touch Bar MacBook Pros,...
B&H Photo has new 2016 Apple 15″ Touch Bar MacBook Pro models in stock today with some available for $50 off MSRP, each including free shipping plus NY sales tax only: - 15″ 2.7GHz Touch Bar... Read more
12-inch Retina MacBooks on sale for up to $10...
12-inch Retina MacBooks remain on sale at B&H Photo with models available for up to $100 off MSRP. Shipping is free, and B&H charges NY sales tax only. B&H will also include a free copy... Read more

Jobs Board

*Apple* Retail - Multiple Positions- White P...
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
Automotive Detailer - *Apple* Used Autos -...
We are currently conductinginterviews and will be accepting applications for a part-time detailer. Apple Used Autos is a great place to work andstart a career. We Read more
*Apple* Retail - Multiple Positions - Apple,...
Job Description: Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, Read more
US- *Apple* Store Leader Program - Apple (Un...
…Summary Learn and grow as you explore the art of leadership at the Apple Store. You'll master our retail business inside and out through training, hands-on Read more
*Apple* & PC Desktop Support Technician...
Apple & PC Desktop Support Technician job in Dallas TX Introduction: We have immediate job openings for several Desktop Support Technicians with one of our most Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.