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Check if OneToOneField is None in Django
...- or maybe even to be sure you also handle other sorts of magic which may happen elsewhere -- you have to extend the test as follows: if hasattr(object, 'onetoonerevrelattr') and object.onetoonerevrelattr != None
– class stacker
Mar 15 '13 at 13:17
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Adding a directory to $LOAD_PATH (Ruby)
...keAntins, this is really great but where should I "bootstrap" load_path in application?
– gaussblurinc
Aug 6 '14 at 13:48
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Android应用开发性能优化完全分析 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...种流畅的帧率规定为60fps。
有了上面的背景，我们开发App的帧率性能目标就是保持在60fps，也就是说我们在进行App性能优化时心中要有如下准则：
换算关系：60帧/秒-----------16ms/帧；
准则：尽量保证每次在16ms内处理完所有的...
Adding multiple class using ng-class
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To apply different classes when different expressions evaluate to true:
<div ng-class="{class1 : expression1, class2 : expression2}">
Hello World!
</div>
To apply multiple classes when an expression holds true...
Folder structure for a Node.js project
...ntains specifications for BDD tests.
/tests contains the unit-tests for an application (using a testing
framework, see
here)
NOTE: both /vendor and /support are deprecated since NPM introduced a clean package management. It's recommended to handle all 3rd-party dependencies using NPM and a package...
Runtime vs. Compile time
...specially for people without much background in programming languages. To approach this problem, I find it helpful to ask
What invariants does the program satisfy?
What can go wrong in this phase?
If the phase succeeds, what are the postconditions (what do we know)?
What are the inputs and output...
Find location of a removable SD card
...would scan additional SD cards and add them to the media provider and give apps read-only access to their files (which is also still supported in the platform today).
Android 4.4 is the first release of the platform that has actually allowed applications to use SD cards for storage. Any access to t...
Python executable not finding libpython shared library
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Can you debug the application successfully when you run gdb from the command line and LD_LIBRARY_PATH is set up properly in the terminal? If not, you will probably have to set up LD_LIBRARY_PATH in your .gdbinit file. See this answer for more ...
Could not find method compile() for arguments Gradle
...en I think its only proper to indicate this as the 'correct' answer, as it appears to be the closest.
– Ichbinjoe
Mar 28 '18 at 4:10
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Xcode warning: “Multiple build commands for output file”
...Xcode is complaining that you are trying to bundle the same file with your application two times.
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