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How to determine an interface{} value's “real” type?

... v + " Yeah!" is possible. fmt.Printf("String: %v", v) default: // And here I'm feeling dumb. ;) fmt.Printf("I don't know, ask stackoverflow.") } share | improve this answer | ...
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Avoiding instanceof in Java

...ng a chain of "instanceof" operations is considered a "code smell". The standard answer is "use polymorphism". How would I do it in this case? ...
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Is there a way to hide the scroll indicators in a UIScrollView?

...e case where those indicators disturb the user interaction. Can I subclass and override a method or do something similar to remove the scroll indicators from the scroll view? ...
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What does “@private” mean in Objective-C?

... // We can access protectedLetter because it's protected // and it is declared by a superclass; @protected variables // are available to subclasses. protectedLetter = 'z'; // We can't access privateBool because it's private; // only methods of the clas...
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how to release localhost from Error: listen EADDRINUSE

i am testing a server written in nodejs on windows 7 and when i try to run the tester in the command line i get the following error ...
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How to add lines to end of file on Linux

... It depends on the last added line, not your current command. When you do the $ echo "foobar" >> file,the newline is already there. If you do $ echo -n "foobar" >> file, you won't append the newline to the end of the line, so you'll write in the same line. ...
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Can't use NVM from root (or sudo)

... The below list of commands (source: digitalocean) seems to fix the problem n=$(which node); \ n=${n%/bin/node}; \ chmod -R 755 $n/bin/*; \ sudo cp -r $n/{bin,lib,share} /usr/local The above command is a bit complicated, but all it's doing is co...
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Difference between jar and war in Java

What is the difference between a .jar and a .war file? Is it only the file extension or is there something more? 13 A...
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How can I use “.” as the delimiter with String.split() in java [duplicate]

What I am trying to do is read a .java file, and pick out all of the identifiers and store them in a list. My problem is with the .split() method. If you run this code the way it is, you will get ArrayOutOfBounds, but if you change the delimiter from "." to anything else, the code works. But I ne...
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When is it appropriate to use C# partial classes?

...was wondering if someone could give me an overview of why I would use them and what advantage I would gain in the process. ...