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How do I find where JDK is installed on my windows machine?

... Actually, the form %VAR_NAME% is Windows – sblundy Jan 13 '11 at 14:29 2 ...
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super() raises “TypeError: must be type, not classobj” for new-style class

...pe(OldStyle()) is the instance type, which does inherit from object. Basically, an old-style class just creates objects of type instance (whereas a new-style class creates objects whose type is the class itself). This is probably why the instance OldStyle() is an object: its type() inherits from ob...
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How to read from standard input in the console?

... I'm not sure what's wrong with the block reader := bufio.NewReader(os.Stdin) fmt.Print("Enter text: ") text, _ := reader.ReadString('\n') fmt.Println(text) As it works on my machine. However, for the next block you need a pointer to the variables you're assigning the input to. Try replacin...
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Proper use of beginBackgroundTaskWithExpirationHandler

...l need to wrap it in a background task. It's also very important that you call endBackgroundTask when you're finished - otherwise the app will be killed after its allotted time has expired. Mine tend look something like this: - (void) doUpdate { dispatch_async(dispatch_get_global_queue(DISPAT...
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How do I activate a virtualenv inside PyCharm's terminal?

...with multiple projects, each which might have a different virtualenv, I'd call the ".pycharmrc" file something different, and perhaps put it into the env directory itself. ~/pycharmenv/bin/terminalactivate sounds like a good option. – Chris Cogdon Mar 10 '14 at...
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What is the correct way to start a mongod service on linux / OS X?

I've installed mongodb and have been able to run it, work with it, do simple DB read / write type stuff. Now I'm trying to set up my Mac to run mongod as a service. ...
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How to save a Python interactive session?

...ntly using Python's interpreter to work with databases, files, etc -- basically a lot of manual formatting of semi-structured data. I don't properly save and clean up the useful bits as often as I would like. Is there a way to save my input into the shell (db connections, variable assignments, lit...
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detect key press in python?

... Python has a keyboard module with many features. Install it, perhaps with this command: pip3 install keyboard Then use it in code like: import keyboard # using module keyboard while True: # making a loop try: # used try so that if user pressed other than the given ...
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How to run a Python script in the background even after I logout SSH?

I have Python script bgservice.py and I want it to run all the time, because it is part of the web service I build. How can I make it run continuously even after I logout SSH? ...
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Failed to install Python Cryptography package with PIP and setup.py

When I try to install the Cryptography package for Python through either pip install cryptography or by downloading the package from their site and running python setup.py , I get the following error: ...