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How do I get the application exit code from a Windows command line?

I am running a program and want to see what its return code is (since it returns different codes based on different errors). ...
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What is the difference between ~> and >= when specifying rubygem in Gemfile?

...constraint. RubyGems will increment the last digit in the version provided and use that until it reaches a maximum version. So ~>0.8.5 is semantically equivalent to: gem "cucumber", ">=0.8.5", "<0.9.0" The easy way to think about it is that you're okay with the last digit incrementing to ...
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Pythonic way to add datetime.date and datetime.time objects

...e event instance --- one holds the date, the other the time of this event, and I want to create a datetime object. 1 Answe...
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When would you use a WeakHashMap or a WeakReference?

...mplementation of so I'm trying to figure out what the use case for them is and how the implementation would work. When have you needed to use a WeakHashMap or WeakReference and how was it used? ...
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How do I make and use a Queue in Objective-C?

... @end Just import the .h file wherever you want to use your new methods, and call them like you would any other NSMutableArray methods. Good luck and Keep on Coding! share | improve this answer ...
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How to see the changes in a Git commit?

When I do git diff COMMIT I see the changes between that commit and HEAD (as far as I know), but I would like to see the changes that were made by that single commit. ...
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How do I make HttpURLConnection use a proxy?

... can we provide proxy username and proxy password through it. – Xolve Jul 4 '10 at 10:15 16 ...
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Pod install is staying on “Setting up CocoaPods Master repo”

...e pod install the first line I see is "Setting up CocoaPods Master repo" and after that I can't see anything more, the console stops there. ...
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What makes JNI calls slow?

...thods, in 2010 I measured calls at an average 40 ns on my Windows desktop, and 11 ns on my Mac desktop. Unless you're making many calls, you're not going to notice. That said, calling a native method can be slower than making a normal Java method call. Causes include: Native methods will not be i...
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Omitting one Setter/Getter in Lombok

...n fields, I annotated it with @Data in order to generate all the setters and getter. However there is one special field for which I don't want to the accessors to be implemented. ...