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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 (...
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]];
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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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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...
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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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...
When should one use final for method parameters and local variables?
...est using final as much as possible and I'm wondering how important that is. This is mainly in the the context of method parameters and local variables, not final methods or classes. For constants, it makes obvious sense.
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A weighted version of random.choice
... needed to write a weighted version of random.choice (each element in the list has a different probability for being selected). This is what I came up with:
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Change default app.config at runtime
...ntries in the app.config file of my application.
What I would like to do is the following:
8 Answers
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