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What's the difference between dist-packages and site-packages?

... manager into this location: /usr/lib/python2.7/dist-packages Since easy_install and pip are installed from the package manager, they also use dist-packages, but they put packages here: /usr/local/lib/python2.7/dist-packages From the Debian Python Wiki: dist-packages instead of site-packag...
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How to concatenate properties from multiple JavaScript objects

... Underscore has few methods to do this; 1. _.extend(destination, *sources) Copy all of the properties in the source objects over to the destination object, and return the destination object. _.extend(a, _.extend(b, c)); => {"one" : 1, "two" : 2, "three" : 3, "fo...
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How to create a zip archive of a directory in Python?

... for file in files: ziph.write(os.path.join(root, file)) if __name__ == '__main__': zipf = zipfile.ZipFile('Python.zip', 'w', zipfile.ZIP_DEFLATED) zipdir('tmp/', zipf) zipf.close() Adapted from: http://www.devshed.com/c/a/Python/Python-UnZipped/ ...
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Iterate over model instance field names and values in template

...f the values of that instance in table format, with the field name (verbose_name specifically if specified on the field) in the first column and the value of that field in the second column. ...
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What is the effect of extern “C” in C++?

...n it posted yet. You'll very often see code in C headers like so: #ifdef __cplusplus extern "C" { #endif // all of your legacy C code here #ifdef __cplusplus } #endif What this accomplishes is that it allows you to use that C header file with your C++ code, because the macro "__cplusplus" will...
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Mocking a class: Mock() or patch()?

...ake a look at this snippet: >>> class MyClass(object): ... def __init__(self): ... print 'Created MyClass@{0}'.format(id(self)) ... >>> def create_instance(): ... return MyClass() ... >>> x = create_instance() Created MyClass@4299548304 >>> >>&gt...
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C# operator overload for `+=`?

...; Console.WriteLine(d); Let view the IL-code for this instructions: IL_0000: nop IL_0001: ldc.i4.s 10 IL_0003: newobj instance void [mscorlib]System.Decimal::.ctor(int32) IL_0008: stloc.0 IL_0009: ldloc.0 IL_000a: ldc.i4.s 10 IL_000c: newobj instance void [mscorli...
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How to implement an STL-style iterator and avoid common pitfalls?

... void swap(iterator& lhs, iterator& rhs); //C++11 I think }; input_iterator : public virtual iterator { iterator operator++(int); //postfix increment value_type operator*() const; pointer operator->() const; friend bool operator==(const iterator&, const iterator&)...
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cpuid汇编指令 - C/C++ - 清泛网 - 专注C/C++及内核技术

... cpuid cmp eax, 80000004h jb not_supported mov di, offset CPU_name mov eax, 80000002h cpuid call save_string mov eax, 80000003h cpuid ...
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How can I create a unique constraint on my column (SQL Server 2008 R2)?

... Or set column as unique from the SQL Query window: alter table location_key drop constraint pinky; alter table your_table add constraint pinky unique(yourcolumn); Changes take effect immediately: Command(s) completed successfully. ...