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How to build Qt for Visual Studio 2010

...pre-built binaries which were made for Visual Studio 2008, but you have to compile it from source. Downloading Qt On https://www.qt.io/download/ Update 2017: the latest Qt 4.x branch (Qt 4.8.6) has 2 pre-built packages, which are now in the archive section: http://download.qt.io/archive/qt/4.8/...
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What is the difference between Serializable and Externalizable in Java?

... Not according to these benchmarks: [code.google.com/p/thrift-protobuf-compare/wiki/Benchmarking], manual serialization (using externizable) is much, much faster than using java's default serialization. If speed matters for your work, definitely write your own serializer. ...
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How update the _id of one MongoDB Document?

... @skelly! I happened to thinking about similar problems and saw your fresh comment made just 2 hours ago. So this modifying id hassle is considered as an intrinsic problem caused by allowing user to choose ID? – RayLuo Jun 2 '14 at 21:56 ...
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Find the max of two or more columns with pandas

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No module named pkg_resources

...age is caused by a missing/broken Python setuptools package. Per Matt M.'s comment and setuptools issue #581, the bootstrap script referred to below is no longer the recommended installation method. The bootstrap script instructions will remain below, in case it's still helpful to anyone. Legacy A...
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How default .equals and .hashCode will work for my classes?

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Confusion between factor levels and factor labels

...uestion, I cannot see where I thought you said differently. I'll delete my comment because it adds less than nothing. – IRTFM Jan 3 '16 at 17:53 ...
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Why does sys.exit() not exit when called inside a thread in Python?

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How to pip install a package with min and max version range?

...package>=0.2,<0.3" is a much better example, because it reflects the common case of saying: "please give me the latest bugfix release of the current minor version, but don't automatically upgrade me to the next minor version, because I would like to do that explicitly, making sure that there a...
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How does Task become an int?

...type of: void (avoid if possible) Task (no result beyond notification of completion/failure) Task<T> (for a logical result of type T in an async manner) The compiler does all the appropriate wrapping. The point is that you're asynchronously returning urlContents.Length - you can't make the...