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Missing return statement in a non-void method compiles
...id method is missing a return statement and the code still compiles.
I know that the statements after the while loop are unreachable (dead code) and would never be executed. But why doesn't the compiler even warn about returning something? Or why would a language allow us to have a non-void met...
How do I fix “Failed to sync vcpu reg” error?
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this worked ,my virtualbox was running in background ,now i really want both of them to work
– Irfan Ahmad
Aug 17 '16 at 13:17
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PHP “pretty print” json_encode [duplicate]
I'm working on a script that creates a JSON file. Right now I'm just using json_encode (PHP 5.2.x) to encode an array into JSON output. Then I print the returned value to a file and save it. Problem is that the client wants to be able to open these JSON files for readability, so I'd like to add li...
R: Comment out block of code [duplicate]
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In Emacs you can also use M-x comment-region. Didn't know about C-x r, thanks!
– Sacha Epskamp
Feb 2 '12 at 8:11
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Length of a JavaScript object
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This doesn't have to modify any existing prototype since Object.keys() is now built in.
Edit: Objects can have symbolic properties which can not be returned via Object.key method. So the answer would be incomplete without mentioning them.
Symbol type was added to the language to create unique ide...
Parsing query strings on Android
...() worked, but was deprecated in L, and removed in M.
So the best answer now is UrlQuerySanitizer. This has existed since API level 1 and still exists. It also makes you think about the tricky issues like how do you handle special characters, or repeated values.
The simplest code is
UrlQuerySan...
How to get a list of repositories apt-get is checking? [closed]
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Downvoted (for now) with comment: Please show us how to capture this output and convert it to the answer to the question, i.e. each time we do apt update, how do we filter that output/text to extract the information relevant to this ques...
Rename a class in Xcode: Refactor… is grayed out (disabled). Why?
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I've been using Xcode for 5 years now, and refactoring has never worked correctly (even xcode 4.6 has major bugs where it WILL corrupt your source code!).
The workaround has always been (still works 100%, even in cases where Apple's code fails)
use shift-c...
Node.js Error: Cannot find module express
...un the command node C:\ChatServer\Server>node server.js. It should work now !!!!
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Install tkinter for Python
... installation directory - and it should work. It worked for me - and I can now import Tkinter etc to my heart's content - yipidy-yay. An entire afternoon spent on this - hope this note saves others from the pain.
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