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How do I select a random value from an enumeration?
... .OfType<Enum>() // casts to Enum
.OrderBy(e => Guid.NewGuid()) // mess with order of results
.FirstOrDefault(); // take first item in result
}
}
public static class Program
{
public enum SomeEnum
{
One = 1,
...
How to crop an image in OpenCV using Python
...sand image loading if you do slicing. Whereas my code will still be on the order if MBs
– smttsp
May 17 at 13:15
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How can I SELECT rows with MAX(Column value), DISTINCT by another column in SQL?
...en home. Reason being GROUP BY will fetch any random row for each home and ORDER BY will just sort the overall all result as produced by GROUP BY
– sactiw
Nov 26 '15 at 12:11
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How do I execute any command editing its file (argument) “in place” using bash?
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@patryk.beza: In order: The input FD is opened from the original file; the original directory entry is deleted; the redirection is processed, creating a new empty file with the same name the old one used to have; then the command runs.
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How to programmatically show next view in ViewPager?
...r, when the user swipes manually and when I jump using setCurrentItem. The order of calls is reversed. When I swipe, it first calls OnPageChangeListener#onPageSelected and then it calls setUserVisibleHint in the fragments. If I use setCurrentItem, it first calls setUserVisibleHint in the fragments a...
Catch an exception thrown by an async void method
...hod begins waiting for the async result. It's insightful to use tracing in order to investigate how the code is actually behaving.
The code below does the following:
Create 4 tasks
Each task will asynchronously increment a number and return the incremented number
When the async result has arrived...
Make absolute positioned div expand parent div height
...rticular case http://jsfiddle.net/gS9q7/
The trick is to reverse element order by floating both elements, the first to the right, the second to the left, so the second appears first.
.child1 {
width: calc(100% - 160px);
float: right;
}
.child2 {
width: 145px;
float: left;
}
Fina...
Share variables between files in Node.js?
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Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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When to use inline function and when not to use it?
...f the library call the old implementation
when developing a library, in order to make a class extensible in the future you should:
add non-inline virtual destructor even if the body is empty
make all constructors non-inline
write non-inline implementations of the copy constructor and assignment...
How to replace plain URLs with links?
...-zA-Z]{2,6} should read something along the lines of (?:[a-zA-Z]{2,6})+ in order to match more complicated domain names, i.e. email@example.co.uk.
– Roshambo
Aug 19 '11 at 15:07
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