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What is the difference between square brackets and parentheses in a regex?
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edited Aug 30 '17 at 16:21
B--rian
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SQL update trigger only when column is modified
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answered Aug 27 '12 at 12:10
mehdi lotfimehdi lotfi
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When to use pip requirements file versus install_requires in setup.py?
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answered Aug 16 '11 at 21:04
Ian BickingIan Bicking
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What is the $? (dollar question mark) variable in shell scripting? [duplicate]
...), you will get the return value thrown by the ls command, which should be 0 (default "success" return value). If it doesn't exist, you should get a number other then 0. The exact number depends on the program.
For many programs you can find the numbers and their meaning in the corresponding man pa...
Using Linq to get the last N elements of a collection?
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collection.Skip(Math.Max(0, collection.Count() - N));
This approach preserves item order without a dependency on any sorting, and has broad compatibility across several LINQ providers.
It is important to take care not to call Skip with a negative ...
What do pty and tty mean?
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edited Jul 12 '18 at 9:40
JohnGH
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answered Dec 13 '10 at 6:21
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log4j logging hierarchy order
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306
This table might be helpful for you:
Going down the first column, you will see how the log w...
Why does an overridden function in the derived class hide other overloads of the base class?
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410
Judging by the wording of your question (you used the word "hide"), you already know what is goi...
Need to understand the usage of SemaphoreSlim
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i guess that if i run 50 thread at a time then code like SemaphoreSlim ss = new SemaphoreSlim(10); will force to run 10 active thread at time
That is correct; the use of the semaphore ensures that there won't be more than 10 workers doing this wo...
Comparing two NumPy arrays for equality, element-wise
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402
(A==B).all()
test if all values of array (A==B) are True.
Note: maybe you also want to test ...