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Python List vs. Array - when to use?

... Basically, Python lists are very flexible and can hold completely heterogeneous, arbitrary data, and they can be appended to very efficiently, in amortized constant time. If you need to shrink and grow your list time-efficiently ...
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How to print a int64_t type in C

... hexadecimal. cppreference.com has a full listing of available macros for all types including intptr_t (PRIxPTR). There are separate macros for scanf, like SCNd64. A typical definition of PRIu16 would be "hu", so implicit string-constant concatenation happens at compile time. For your code to ...
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Meaning of “[: too many arguments” error from if [] (square brackets)

... # if [ hello world == 0 ] fi The same will be true for any function call that puts down a string containing spaces or other special characters. Easy fix Wrap the variable output in double quotes, forcing it to stay as one string (therefore one argument). For example, VARIABLE=$(/some/comm...
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Git: cannot checkout branch - error: pathspec '…' did not match any file(s) known to git

... Try git fetch so that your local repository gets all the new info from github. It just takes the information about new branches and no actual code. After that the git checkout should work fine. shar...
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What are some (concrete) use-cases for metaclasses?

...a couple functions I found that I was able to increment the figure count, call draw manually, etc, but I needed to do these before and after every plotting call. So to create both an interactive plotting wrapper and an offscreen plotting wrapper, I found it was more efficient to do this via metacla...
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Is the C# static constructor thread safe?

... { mutex.WaitOne(); return instance; } // Each call to Acquire() requires a call to Release() public static void Release() { mutex.ReleaseMutex(); } } share | ...
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Cross Domain Form POSTing

I've seen articles and posts all over (including SO) on this topic, and the prevailing commentary is that same-origin policy prevents a form POST across domains. The only place I've seen someone suggest that same-origin policy does not apply to form posts, is here . ...
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Shiro vs. SpringSecurity [closed]

...ation environment. That means Shiro's Spring integration is superb and it all works exceptionally well. You can rest assured that if you're writing a Spring app, you'll have a well-rounded security experience. For example, consider the Spring XML config example in another post in this thread. He...
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Receiving “fatal: Not a git repository” when attempting to remote add a Git repo

...s step, but had to do it again after setting up my engine yard account installing engine yard. – AVProgrammer Feb 6 '12 at 1:04 3 ...
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What to do about a 11000 lines C++ source file?

...t. Move this into its own file, and for that matter into its own class, in all branches. Because it's stable, this won't cause (many) "awkward" merges that have to be applied to a different file from the one they were originally made on, when you merge the change from one branch to another. Repeat. ...