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Lost connection to MySQL server at 'reading initial communication packet', system error: 0

...ests that it might be a firewall problem: I have just had this problem and found it was my firewall. I use PCTools Firewall Plus and it wasn't allowing full access to MySQL. Once I changed that it was fine. Hope that helps. Could that be it? Also, someone here suggests that it might be becaus...
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Scanner vs. StringTokenizer vs. String.Split

I just learned about Java's Scanner class and now I'm wondering how it compares/competes with the StringTokenizer and String.Split. I know that the StringTokenizer and String.Split only work on Strings, so why would I want to use the Scanner for a String? Is Scanner just intended to be one-stop-shop...
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Daemon Threads Explanation

...tion, or whatever. These are only useful when the main program is running, and it's okay to kill them off once the other, non-daemon, threads have exited. Without daemon threads, you'd have to keep track of them, and tell them to exit, before your program can completely quit. By setting them as dae...
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How do I create 7-Zip archives with .NET?

... If you can guarantee the 7-zip app will be installed (and in the path) on all target machines, you can offload by calling the command line app 7z. Not the most elegant solution but it is the least work. ...
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Why I can't change directories using “cd”?

... Shell scripts are run inside a subshell, and each subshell has its own concept of what the current directory is. The cd succeeds, but as soon as the subshell exits, you're back in the interactive shell and nothing ever changed there. One way to get around this is t...
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img tag displays wrong orientation

...entation: from-image; } According to the spec as of Jan 25 2016, Firefox and iOS Safari (behind a prefix) are the only browsers that support this. I'm seeing issues with Safari and Chrome still. However, mobile Safari seems to natively support orientation without the CSS tag. I suppose we'll have...
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What does functools.wraps do?

...g def f(x): """does some math""" return x + x * x f = logged(f) and your function f is replaced with the function with_logging. Unfortunately, this means that if you then say print(f.__name__) it will print with_logging because that's the name of your new function. In fact, if you lo...
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What is a ViewModelLocator and what are its pros/cons compared to DataTemplates?

...meone give me a quick summary of what a ViewModelLocator is, how it works, and what the pros/cons are for using it compared to DataTemplates? ...
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Const before or const after?

... why is there two correct ways of specifying const data and in what situation would you prefer or need one over the other if any? Essentially, the reason that the position of const within specifiers prior to an asterisk does not matter is that the C grammar was defined that way ...
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How do you produce a .d.ts “typings” definition file from an existing JavaScript library?

I'm using a lot of libraries both my own and 3rd party. I see the "typings" directory contains some for Jquery and WinRT... but how are they created? ...