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How do I determine the size of an object in Python?
...ny type of object.
All built-in objects will return
correct results, but this does not
have to hold true for third-party
extensions as it is implementation
specific.
Only the memory consumption directly attributed to the object is
accounted for, not the memory consumption of objects it refers to.
Th...
What is the difference between mocking and spying when using Mockito?
...
The answer is in the documentation:
Real partial mocks (Since 1.8.0)
Finally, after many internal debates & discussions on the mailing list, partial mock support was added to Mockito. Previously we considered partial mocks as code ...
Tab Vs Space preferences in Vim
Vim is very accommodating when it comes to tab Vs. space preferences. As I understand it, the tabstop setting indicates the width of a tab character. The shiftwidth setting specifies how many columns to increment/decrement when using the << and >> commands, whereas the softtabst...
What does it mean by select 1 from table?
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SELECT 1 FROM TABLE_NAME means, "Return 1 from the table". It is pretty unremarkable on its own, so normally it will be used with WHERE and often EXISTS (as @gbn notes, this is not necessarily best practice, it is, however, common enough to be noted, even if it isn't really meaningful (...
Differences between ExpandoObject, DynamicObject and dynamic
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The dynamic keyword is used to declare variables that should be late-bound.
If you want to use late binding, for any real or imagined type, you use the dynamic keyword and the compiler does the rest.
When you use the dynamic keyword to interact...
How do I send a POST request with PHP?
...ally I want to read the contents that come after the search query, when it is done. The problem is that the URL only accepts POST methods, and it does not take any action with GET method...
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How to remove convexity defects in a Sudoku square?
...nslate it to OpenCV yourself. It's written in Mathematica.
The first step is to adjust the brightness in the image, by dividing each pixel with the result of a closing operation:
src = ColorConvert[Import["http://davemark.com/images/sudoku.jpg"], "Grayscale"];
white = Closing[src, DiskMatrix[5]];
...
What is the meaning of erb?
Why is the view of Rails application in the format *.erb.html ? What does "erb" mean?
6 Answers
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App Inventor 2 项目合并工具 AIMerge · App Inventor 2 中文网
...e database or asset but they must be named the same (for more details on this see the Universal Databases and Assets section below). Finally, no two different screens or assets can have the same name (with the exception of “Screen1” which can be renamed). For these reasons it is important to dec...
Understanding Fragment's setRetainInstance(boolean)
...our questions:
Does the fragment also retain its view state, or will this be recreated on configuration change - what exactly is "retained"?
Yes, the Fragment's state will be retained across the configuration change. Specifically, "retained" means that the fragment will not be destroyed on con...