大约有 40,000 项符合查询结果(耗时:0.0695秒) [XML]

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... The 'correct' way is the answer from Magnus. I recommend original poster to change the accepted answer. – jhabbott Feb 12 '13 at 16:33 8 ...
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How to convert latitude or longitude to meters?

... For approximating short distances between two coordinates I used formulas from http://en.wikipedia.org/wiki/Lat-lon: m_per_deg_lat = 111132.954 - 559.822 * cos( 2 * latMid ) + 1.175 * cos( 4 * latMid); m_per_deg_lon = 111132.954 * cos ( latMid ); . In the code below I've left the raw numbers ...
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Are nested try/except blocks in python a good programming practice?

...or: raise AttributeError("The object doesn't have such attribute") from None PS. has_key() has been deprecated for a long time in Python 2. Use item in self.dict instead. share | improve t...
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Creating my own Iterators

...MO) elegant solution for exactly your problem: exposing member collections from an object, using Boost.Iterators. If you want to use the stl only, the Josuttis book has a chapter on implementing your own STL iterators. shar...
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MySQL WHERE: how to write “!=” or “not equals”?

... DELETE FROM konta WHERE taken <> ''; share | improve this answer | follow | ...
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Naming convention - underscore in C++ and C# variables

... Actually the _var convention comes from VB not C# or C++ (m_,... is another thing). This came to overcome the case insensitivity of VB when declaring Properties. For example, such code isn't possible in VB because it considers user and User as the same ident...
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Correct format specifier for double in printf

...ote that this is one place that printf format strings differ substantially from scanf (and fscanf, etc.) format strings. For output, you're passing a value, which will be promoted from float to double when passed as a variadic parameter. For input you're passing a pointer, which is not promoted, so ...
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What XML parser should I use in C++? [closed]

...ude support (with callbacks so that you can tell it where it gets the file from), an XPath 1.0 recognizer, RelaxNG and Schematron support (though the error messages leave a lot to be desired), and so forth. It does have a dependency on iconv, but it can be configured without that dependency. Though ...
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Smart pointers: who owns the object? [closed]

...er. When you assign one pointer to another, the second 'steals' the object from the first. I have my own implementation for these, but they are also available in Boost. I still pass objects by reference (const whenever possible), in this case the called method must assume the object is alive only ...
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Where do I find old versions of Android NDK? [closed]

...s like you can construct the link to the NDK that you want and download it from dl.google.com: Linux example: http://dl.google.com/android/ndk/android-ndk-r9b-linux-x86.tar.bz2 http://dl.google.com/android/ndk/android-ndk-r9b-linux-x86_64.tar.bz2 OS X example: http://dl.google.com/android/ndk/and...