Comments for Logic High Blog

Comment on Blocks Rock – A Cocoa Asynchronous NSURLConnection block example by 0x8badf00d

0x8badf00d — Fri, 03 Feb 2012 17:46:35 +0000

Misleading title. Making a Synchronous network call on background thread doesn’t make it asynchronous. You are blocking thread that makes synchronous request and waits for response, if the server takes several minutes to reply back your thread is blocked until then.

Comment on PirateWalla iPhone by Kevin Lohman

Kevin Lohman — Wed, 18 Jan 2012 19:48:08 +0000

Piratewalla is no longer for sale in the store. Gowalla removed their 3rd Party API. https://twitter.com/#!/piratewalla/status/126147045940666368

Comment on Blocks Rock – A Cocoa Asynchronous NSURLConnection block example by Julius

Julius — Thu, 29 Dec 2011 07:49:30 +0000

seems like your async call cannot be cancel

Comment on Quantum Entanglement by BadPirate

BadPirate — Mon, 19 Dec 2011 04:45:18 +0000

Yeah, I’ve read a few of those. Asimov did a lot stuff in that area too.

Comment on You call that art? by Dan

Dan — Sat, 19 Nov 2011 05:25:09 +0000

I always feel a little bothered by my code. Like I missed the left turn at Albuquerque on my way to Pismo Beach. I’m usually proud of my math, maybe it’s because my proofs are harder to run than my code, which shows its defects in startling clarity. Maybe it’s just that math has even more power than lisp macros. “Let D be the set of all dissections of [a,b], and let U(f,d) be the infimum of the upper sums of f on a dissection d in D” is an abstraction the lambda calculus shies away from.

Playing with limits really exposes the power of math, while playing with templates or conditional compilation always leaves a dry taste in my mouth. All the same, just making something run badly is satisfying, and iterative refinement is a pleasure. But showing that any class of objects necessarily has conditions x, y, and z given a and b is power incarnate, even when it’s botched it’s exhilarating. The biggest problem with math is that there’s no way to generate ‘stream of consciousness’ style what might be valid, it’s all fits and starts. You can always iterate over the problem space with a computer until you think of something clever and elegant to be proud of. In math, sometimes you write total nonsense, and know it quickly.

Comment on Quantum Entanglement by Daniel Uber

Daniel Uber — Thu, 17 Nov 2011 14:28:31 +0000

Kevin, have you read the ‘Dune’ books? A fair amount of the fiction concerns the consequences of prescience. Frank Herbert’s no Tolstoy, but they’re quick reads.

Comment on UIImage fix by Mick

Mick — Sun, 16 Oct 2011 01:18:37 +0000

Hooray!! I did get this code to work but I guessed my way through it. Still don’t understand it but maybe I will. Thanks so much for the code!!

Comment on UIImage fix by Mick

Mick — Sun, 09 Oct 2011 21:10:03 +0000

This code is way over my head.
I Really Really need to figure out how to use it.
In my app I am attaching a saved image to an email body so I don’t have a UIImage to manipulate. I only specify a path to the image in the documents directory, pull it into NSData and attach it as a mime type.jpg. It works great but there again the image is turned left 90deg when the recipient views the email. Does anyone have a snippet of code that will help me understand how to get the saves image into UIImage so I can expose it to this function?
Thanks for the code though. Once I grasp this my app is gonna rock big time!

Comment on UIImage fix by Peter M

Peter M — Sun, 09 Oct 2011 17:46:14 +0000

Saved me from my ignorance of image formats…THANKS for your excellent code that just WORKED first time out of the gate!

Comment on When does layoutSubviews get called? by Juguang XIAO

Juguang XIAO — Mon, 26 Sep 2011 08:22:48 +0000

For device rotation, as you stated:

- rotating a device only calls layoutSubview on the parent view (the responding viewControllers primary view)

This is partially true. This can be true only when your VC is in the VC hierarchy (root at window.rootViewController), well this is most common case. In iOS 5, if you create a VC, but it is not added into any another VC, then this VC would not get any noticed when device rotate, therefore its view would not get noticed too by calling layoutSubviews