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How do I run a Java program from the command line on Windows?

... saved your file as A.text first thing you should do is save it as A.java. Now it is a Java file. Now you need to open cmd and set path to you A.java file before compile it. you can refer this for that. Then you can compile your file using command javac A.java Then run it using java A ...
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How to set web.config file to show full error message

I deployed my MVC-3 application on windows Azure. But now when I am requesting it through staging url it shows me (Sorry, an error occurred while processing your request.) . Now I want to see the full error message, by default it is hiding that because of some security reasons. I know that we can...
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What is getattr() exactly and how do I use it?

...here getattr can be useful. you can't write object.x, because you don't know in advance which attribute you want (it comes from a string). Very useful for meta-programming. you want to provide a default value. object.y will raise an AttributeError if there's no y. But getattr(object, 'y', 5) will...
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Node / Express: EADDRINUSE, Address already in use - Kill server

...f' fails: 14 Mar 21:19:30 - socket.io ready - accepting connections Could now start the server: EADDRINUSE, Address already in use – Jean Jordaan Mar 14 '11 at 14:21 ...
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How to establish a connection pool in JDBC?

...etAcquireIncrement(5); cpds.setMaxPoolSize(20); // The DataSource cpds is now a fully configured and usable pooled DataSource But if you are running inside an application server, I would recommend to use the built-in connection pool it provides. In that case, you'll need to configure it (refer t...
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Scala type programming resources

...]]] (This is a lot like defining a val to be the result of a function.) Now, suppose we want to define a value-level function def toInt[T <: Nat](v : T) which takes in an argument value, v, that conforms to Nat and returns an integer representing the natural number encoded in v's type. For exa...
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Why JavaScript rather than a standard browser virtual machine?

...never went into IT). But it's not going to happen, and we're stuck with it now. I suspect, in time, it will become the "Machine language" for the web, with other better designed languages and APIs compile down to it (and cater for different runtime engine foibles). I don't think, however, any of t...
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pycharm running way slow

...hon file was focused in the editor, but this was fixed with version 5. But now with version 2016.1.2 the IDE seems to randomly start using >50% even with all editor files closed and nothing running and in Power Save mode, and it carries on indefinitely until I close PyCharm, and soon starts again...
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How do I use extern to share variables between source files?

I know that global variables in C sometimes have the extern keyword. What is an extern variable? What is the declaration like? What is its scope? ...
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How to unit test a Node.js module that requires other modules and how to mock the global require fun

... You can now! I published proxyquire which will take care of overriding the global require inside your module while you are testing it. This means you need no changes to your code in order to inject mocks for required modules. Prox...