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When converting a project to use ARC what does “switch case is in protected scope” mean?
...en a while, but I seem to remember something in the C standard that didn't allow variable assignment after a case statement because the code is not really inside of a block. By adding curly braces {...} after the case and before the break, everything inside is in a scoped block and will behave as e...
Is there more to an interface than having the correct methods
...OtherKindOfBox();
Once you get used to it, you'll find it's a great (actually essential) way to work.
Another reason is, for example, if you want to create a list of boxes and perform some operation on each one, but you want the list to contain different kinds of boxes. On each box you could do:
...
How to run Node.js as a background process and never die?
...ill %2 with the number being the index of the process.
Powerful solution (allows you to reconnect to the process if it is interactive):
screen
You can then detach by pressing Ctrl+a+d and then attach back by running screen -r
Also consider the newer alternative to screen, tmux.
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What does @synchronized() do as a singleton method in objective C?
...probably isn't multithreaded, and you probably don't need to use it (especially if the singleton itself isn't thread-safe).
Edit: Adding some more information that wasn't in the original answer from 2011.
The @synchronized directive prevents multiple threads from entering any region of code that...
Test if remote TCP port is open from a shell script
...onnection timeout separate from/in addition to the -w# timeout, which basically functions as a read timeout.
– Doktor J
Aug 30 '17 at 18:46
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How to validate date with format “mm/dd/yyyy” in JavaScript?
...bsolutely have to second this as the only extremely correct answer amongst all those submitted! You DO NOT want to do something as complex as date parsing on your own!
– Theodore R. Smith
Jul 5 '16 at 10:58
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How to delete last character in a string in C#?
...he title. My complaint: if you are going to be fluent, why not just do it all in one line.
– Graham
Jul 24 '15 at 21:34
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Postgres NOT in array
... edited Feb 26 '14 at 17:55
All Workers Are Essential
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answered Jul 30 '12 at 22:44
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Append integer to beginning of list in Python [duplicate]
...original list? It could be an argument to a function for instance and the caller doesn't expect the list to be modified and it would introduce an error into the program to do so.
– BlackJack
Oct 19 '16 at 12:50
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How to use a WSDL file to create a WCF service (not make a call)
...cutil your.wsdl /l:vb if you want Visual Basic)
This will create a file called "your.cs" in C# (or "your.vb" in VB.NET) which contains all the necessary items.
Now, you need to create a class "MyService" which will implement the service interface (IServiceInterface) - or the several service inter...