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What is the significance of initializing direction arrays below with given values when developing ch

I am new to competitive programming, and I noticed frequently, many of the great coders have these four lines in their code (particularly in those involving arrays): ...
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How accurate is python's time.sleep()?

... Yes you are right, I tried with Linux 2.6.24-24 and was able to get pretty close to 1000 Hz update rates. At the time I was doing this I was also running the code on Mac and Windows, so I probably got confused. I know windows XP at least has a tick rate of about 10ms. ...
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What is “thread local storage” in Python, and why do I need it?

...on-local variables (because each function call gets its own set of locals, and threads are always separate function calls.) And even then, only the variables themselves (the names that refer to objects) are local to the function; objects themselves are always global, and anything can refer to them. ...
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Webdriver Unable to connect to host 127.0.0.1 on port 7055 after 45000 ms

I have box where I run tests. It seems like Jenkins would ssh in and execute commands described in the specific job that's running. ...
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What does android:layout_weight mean?

I don't understand how to use this attribute. Can anyone tell me more about it? 13 Answers ...
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Java client certificates over HTTPS/SSL

I am using Java 6 and am trying to create an HttpsURLConnection against a remote server, using a client certificate. The server is using an selfsigned root certificate, and requires that a password-protected client certificate is presented. I've added the server root certificate and the client c...
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Static methods in Python?

...should only be used if you have to support ancient versions of Python (2.2 and 2.3) class MyClass(object): def the_static_method(x): print(x) the_static_method = staticmethod(the_static_method) MyClass.the_static_method(2) # outputs 2 This is entirely identical to the first exampl...
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Working copy XXX locked and cleanup failed in SVN

...as needed. Commit Another option would be to delete the top level folder and check out again. Hopefully it doesn't come to that though. share | improve this answer | follo...
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libxml/tree.h no such file or directory

...rameworks section). On the Mac, you'll find it at /usr/lib/libxml2.dylib and for the iPhone, you'll want the /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS4.0.sdk/usr/lib/libxml2.dylib version. Since libxml2 is a .dylib (not a nice friendly .framework) we still have on...
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EProgrammerNotFound exception in Delphi?

... It is just the result of a long day and we had gotten a little giddy. For many, many years (ever since I'd been on the team), we'd always joked about replacing some error message in the compiler for one of the most common errors with a similar message. Internal...