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Finding quaternion representing the rotation from one vector to another
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Be aware that this does not handle the case of parallel vectors (both in the same direction or pointing in opposite directions). crossproduct will not be valid in these cases, so you first need to check dot(v1, v2) > 0.999999 and dot(v1, v2) < -0.999999, respectively, ...
Is there a shortcut to move between header and source file in VC++?
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Visual Assist is a great tool - I'd recommend it for all developers using MSVC
– Stephen Nutt
Apr 9 '10 at 0:56
10
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Throw HttpResponseException or return Request.CreateErrorResponse?
... // If no exception handler registered for the exception type, fallback to default handler
actionExecutedContext.Response = DefaultHandler(
actionExecutedContext.Exception.GetBaseException(), actionExecutedContext.Request
);
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Catching an exception while using a Python 'with' statement
... print 'oops'
If you want different handling for errors from the open call vs the working code you could do:
try:
f = open('foo.txt')
except IOError:
print('error')
else:
with f:
print f.readlines()
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What are “named tuples” in Python?
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Named tuples are basically easy-to-create, lightweight object types. Named tuple instances can be referenced using object-like variable dereferencing or the standard tuple syntax. They can be used similarly to struct or other common record types...
Relative imports in Python 2.7
... not determine what package Python thinks it is in. That depends, additionally, on how you load the file into Python (by running or by importing).
There are two ways to load a Python file: as the top-level script, or as a
module. A file is loaded as the top-level script if you execute it directl...
jQuery .live() vs .on() method for adding a click event after loading dynamic html
... you want the click handler to work for an element that gets loaded dynamically, then you set the event handler on a parent object (that does not get loaded dynamically) and give it a selector that matches your dynamic object like this:
$('#parent').on("click", "#child", function() {});
The event...
Entity Framework - Invalid Column Name '*_ID"
...ne for you to try to make the connection between the tables. This specifically happens with ICollection and has driven me "batty" trying to figure it out.
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C++ code file extension? .cc vs .cpp [closed]
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When one considers that the compiler is not typically the only tool involved -- almost always, there is "make" or a similar utility that WILL care which extensions you use, for build rules matching -- then this answer really does not address the core concerns of the questio...
“Add as Link” for folders in Visual Studio projects
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@mo. your answer adds links to all files in the project root, sometimes it is inconvenient. %(RecursiveDir) should changed to some link folder name: for example to link source folder from wp7 project 'MyMainProject' in another project in this solutio...