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I am writing a program in Objective-C (XCode 3.2, on Snow Leopard) that is capable of either selectively blocking certain sites for a duration or only allow certain sites (and thus block all others) for a duration. The reasoning behind this program is rather simple. I tend to get distracted when I…
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Hi,
I made an Objective-C project for the iPhone. I had only one cpp class, the soundEngine taken from some Apple demo. Now I'm trying to merge OpenFeint which is coded in Objective-C++. As soon as I drop in the code without even referring to it from my code, when I hit Build, my Objective-C code…
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Does anyone know of a way to add additional attribute types to the @property keyword without modifying the compiler? Or can anyone think of another way to genericize getter/setter creation?
Basically, I have a lot of cases in a recent project where it's handy for objects to lazily instantiate their…
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What's the ObjectiveC syntax for specifying a protocol as an argument in a method?
Say I have 2 protocols, MyProtocol and MyProtocolCB:
@protocol MyProtocolCB <NSObject>
- (void) func;
@end
@protocol MyProtocol <NSObject>
- (void) register:(MyProtocolCB*) cb;
@end
I'm receiving this…
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I am developing an iPhone application and I use HTML to display formatted text.
I often display the same webpage, but with a different content. I would like to use a template HTML file, and then fill it with my diffent values.
I wonder if ObjectiveC has a template system similar to ERB in Ruby.
That…
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Hello all,
I am using JQuery to get the contents of a div, which only contains a price in dollars and I would like to add $99 to it, but its text, so when I do the below it won't work.
$('#price_' + part[0]).text($('#price_' + part[0]).text() + 99);
//Changes the div contents to $10099 - if it the…
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I am trying to add the following:
I have an array of double pointers call A. I have another array of double pointers call it B, and I have an unsigned int call it C.
So I want to do:
A[i] = B[i] - C;
how do I do it? I did:
A[i] = &B[i] - C;
I don't think I am doing this correctly.
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2¹6-1 & 25 = 25 (or? obviously ?)
A developer asked me today what is bitwise 65535 & 32 i.e. 2¹6-1 & 25 = ?
I thought at first spontaneously 32 but it seemed to easy whereupon I thought for several minutes and then answered 32. 32 seems to have been the correct answer but how? 65535=2¹6-1=1111111111111111…
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I have been reading up on arithmetic coding and, while I understand how it works, all the guides and instructions I've read start with something like:
Set up your intervals based upon the frequency of symbols in your data; i.e., more likely symbols get proportionally larger intervals.
My main…
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I came across a question that (eventually) landed me wondering about array arithmetic. I'm thinking specifically in Ruby, but I think the concepts are language independent.
So, addition and subtraction are defined, in Ruby, as such:
[1,6,8,3,6] + [5,6,7] == [1,6,8,3,6,5,6,7] # All the elements of…
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