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Catch multiple exceptions at once?
It is discouraged to simply catch System.Exception . Instead, only the "known" exceptions should be caught.
27 Answers
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What causes and what are the differences between NoClassDefFoundError and ClassNotFoundException?
...= new B();" After compilation, I removed the B.class file from bin folder. Now from Main method of third class when I create object of Class1. The rror is thown as follws :-------- "Exception in thread "main" java.lang.NoClassDefFoundError: spring/B" ........ So it exactly mentiones which class it d...
Proper Linq where clauses
... x.Name == "Fido" &&
x.Fat == true)
Now what difference that actually makes depends on the implementation of Where being called. If it's a SQL-based provider, I'd expect the two to end up creating the same SQL. If it's in LINQ to Objects, the second will have f...
How can I save an image to the camera roll?
...r your patience qegal. I haven't had a chance to revisit this issue until now. Your EDIT us super helpful. The image is in the app's bundle. There are several images in the app and they can be viewed as small thumbnails. When a small thumbnail is selected it goes to a new view and a fullscreen v...
In what cases do I use malloc and/or new?
... or throw ...
}
return new (mem)T(std::forward(args)...);
}
};
Now though in fixing all the issues we identified so far we've practically reinvented the default new operator. If you're going to use malloc and placement new then you might as well just use new to begin with!
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What does “not run” mean in R help pages?
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... how did I not know about this function?
– Matt Parker
Sep 21 '09 at 14:41
5
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What is the difference between up-casting and down-casting with respect to class variable
...g) animal;
Basically what you're doing is telling the compiler that you know what the runtime type of the object really is. The compiler will allow the conversion, but will still insert a runtime sanity check to make sure that the conversion makes sense. In this case, the cast is possible because ...
How to un-commit last un-pushed git commit without losing the changes
...t those changes are still visible in the history)
git push origin master
now if you want to have those changes as you local changes in your working copy ("so that your local copy keeps the changes made in that commit") - just revert the revert commit with --no-commit option:
git revert --no-commi...
Implementing Fast and Efficient Core Data Import on iOS 5
... should not be updated, but we need to reload the data as well
}];
}
Now, for what may be your real issue regarding the hang... you show two different calls to save on the master. the first is well protected in its own performBlock, but the second is not (though you may be calling saveMaster...
Amazon S3 direct file upload from client browser - private key disclosure
...in the loop. (NOTE: Once you give your code to a client, it's "their" code now.) Locking down CORS is not going to help: People can easily write a non-web-based tool (or a web-based proxy) that adds the correct CORS header to abuse your system.
The big problem is that you can't differentiate betwe...