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How to copy an object in Objective-C
I need to deep copy a custom object that has objects of its own. I've been reading around and am a bit confused as to how to inherit NSCopying and how to use NSCopyObject.
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Is explicitly closing files important?
...ot using try - finally or the " with " statement, is this a problem? Or does it suffice as a coding practice to rely on the Python garbage-collection to close all files? For example, if one does this:
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How to revert a Git Submodule pointer to the commit stored in the containing repository?
I have a git submodule in my main git repo. As I understand it, the main repo stores a SHA value (somewhere...), pointing to the specific commit of the submodule that it is "linked to".
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Difference between “module.exports” and “exports” in the CommonJs Module System
On this page ( http://docs.nodejitsu.com/articles/getting-started/what-is-require ), it states that "If you want to set the exports object to a function or a new object, you have to use the module.exports object."
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What is the meaning of addToBackStack with null parameter?
I have a customer code. There is only one activity for all of the fragments i.e. the single activity is managing all the fragments.
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C/C++ macro string concatenation
Is it possible to concatenate have STR3 == "s1"?
You can do this by passing args to another Macro function. But is there a direct way?
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Generic Repository With EF 4.1 what is the point
As i dig deeper in to the DbContext, DbSet and associated interfaces, I am wondering why you would need to implement a separate "Generic" Repository around these implementations?
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Why is 'false' used after this simple addEventListener function?
What is the false for at the end? Thanks.
3 Answers
3
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How can I save an image to the camera roll?
I am new to Xcode (using 4.3) and am not sure how to save an image to the device's camera roll. All that I have done so far is set up an IBAction for the button to save the image. What library method or function can I use to save an image to the user's camera roll?
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