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Fast Linux File Count for a large number of files
...o check file types, differences between different OSs, standard libraries, etc. come into play, so I have written a program that tries to be usable on any system where it will compile.
There is very little error checking, and the count function itself doesn't really report errors. The only calls th...
python max function using 'key' and lambda expression
...that the function should accept the items passed to it by max, min, sorted etc properly. Plus I have mentioned max(lis, key=int) right at the end. :-)
– Ashwini Chaudhary
Aug 19 '15 at 6:55
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Position of least significant bit that is set
... set bit, or the highest set bit, or counting the number of leading zeroes etc.
If you have any one instruction of this class you can cheaply emulate the others.
Take a moment to work through it on paper and realise that x & (x-1) will clear the lowest set bit in x, and ( x & ~(x-1) ) will...
Casperjs/PhantomJs vs Selenium
...lly by changing the underlying WebDriver implementation to Chrome, Firefox etc.
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How does SIGINT relate to the other termination signals such as SIGTERM, SIGQUIT and SIGKILL?
...catch or ignore it) is to terminate the process in the same way as SIGTERM etc. .
There is a table in the POSIX definitions for signal.h which lists the various signals and their default actions and purposes, and the General Terminal Interface chapter includes a lot more detail on the terminal-rela...
Android AsyncTask threads limits?
... the phone. For all those operations (updates, retrieving data from db and etc.) I use async tasks. As up till now I didn't see why I shouldn't use them, but recently I experienced that if I do some operations some of my async tasks simply stop on pre-execute and don't jump to doInBackground. That w...
Once upon a time, when > was faster than < … Wait, what?
...ntions that we can perform custom depth tests, such as GL_LESS, GL_ALWAYS, etc. He also explains that the actual meaning of depth values (which is top and which isn't) can also be customized. I understand so far. And then the author says something unbelievable:
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When should I use cross apply over inner join?
...ch as employment), like Age, AgeGroup, AgeAtHiring, MinimumRetirementDate, etc. for use in your end-user application (Excel PivotTables, for example).
Options are limited and rarely elegant:
JOIN subqueries cannot introduce new values in the dataset based on data in the parent query (it must stan...
What goes into the “Controller” in “MVC”?
...from the view as the view is from the model.
... should any validation etc be
done in the Controller? If so, how do
I feedback error messages back to the
View - should that go through the
Model again, or should the Controller
just send it straight back to View?
If the validation i...
What's the difference between IEquatable and just overriding Object.Equals()?
...at classes such as List<T>, Dictionary<K,V>, HashSet<T>, etc. These structures make heavy use of GetHashCode and Equals. But for value types this required boxing. IEquatable<T> lets a structure implement a strongly typed Equals method so no boxing is required. Thus much bette...