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Why does base64 encoding require padding if the input length is not divisible by 3?

...e stream correctly and there would be no need for padding. That's a great idea, as long as we know the length of the data we're encoding before we start encoding it. But what if, instead of words, we were encoding chunks of video from a live camera? We might not know the length of each chunk in adv...
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How do you clear the SQL Server transaction log?

...DBCC SHRINKDATABASE and the maintenance plan option to do the same are bad ideas, especially if you really only need to resolve a log problem issue. Target the file you want to adjust and adjust it independently, using DBCC SHRINKFILE or ALTER DATABASE ... MODIFY FILE (examples above). Shrink the lo...
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Relative imports in Python 2.7

... ret = doctest.testmod() sys.exit(0 if ret.failed == 0 else 1) The idea here is this (and note that these all function the same across python2.7 and python 3.x): If run as import lib or from lib import foo as a regular package import from ordinary code, __package is lib and __name__ is lib....
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Omitting all xsi and xsd namespaces when serializing an object in .NET?

...ou are still passing the namespaces to the Serialize method. I thought the idea of providing a Public member was that you wouldn't have to do that? I can't get it to work though without passing it to the Serialize method. And unfortunately, I don't have access to that method call. I can only set the...
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How to use Servlets and Ajax?

...t". I can also see that my XML is populated with data when I debug it. Any ideas ? – 629 Apr 17 '18 at 8:30  |  show 2 more comments ...
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Is it possible to use Java 8 for Android development?

...Android Studio. It is based on the community edition of popular IntelliJ Idea IDE by JetBrains and it has recently been upgraded to its ‘beta’ version by Google in early July 2014, slightly before this guide was written. Eclipse will remain as the prominent development environment, at le...
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What do linkers do?

...name, "overlays"). Linux has shared libraries, which is basically the same idea as DLLs (hard core Linux guys I know would tell me there are MANY BIG differences). Hope this helps you understand! share | ...
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What is the best way to compute trending topics or tags?

... two characteristics are exactly what you are looking for. To give you an idea of simple this can be to implement, here is a python implementation (minus all the database interaction): >>> class EMA(object): ... def __init__(self, base, decay): ... self.val = base ... self.decay = de...
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What does Expression.Quote() do that Expression.Constant() can’t already do?

... to find out whether this value is a special one or not. Furthermore, the idea that avoiding redundancy is even a goal is incorrect. Sure, avoiding unnecessary, confusing redundancy is a goal, but most redundancy is a good thing; redundancy creates clarity. New factory methods and node kinds are ch...
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When to use self over $this?

... echo 'Y::foo()'; } } $x = new Y(); $x->bar(); ?> The idea is that $this->foo() calls the foo() member function of whatever is the exact type of the current object. If the object is of type X, it thus calls X::foo(). If the object is of type Y, it calls Y::foo(). But with se...