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How to sort List of objects by some property
...d idea to implement Comparable<T> if there's a single "natural" sort order... otherwise (if you happen to want to sort in a particular order, but might equally easily want a different one) it's better to implement Comparator<T>. This particular situation could go either way, to be honest...
SQL - many-to-many table primary key
... a separate index on (col2,col1) will catch those cases where the opposite order would execute faster. The surrogate is a waste of space.
You won't need indexes on the individual columns since the table should only ever be used to join the two referenced tables together.
That comment you refer to ...
Amazon S3 direct file upload from client browser - private key disclosure
... issue at GitHub please take a look on this Thanks. github.com/aws/aws-sdk-php/issues/1332
– usama
Jul 18 '17 at 20:48
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Visual Studio 64 bit?
...h, but follow). Same situation happened in history: Windows 64!...
So in order to answer this fully I want you to remember old days. Imagine reasons for "why not we see 64bit Windows" are there at the time. I think at the time for Windows64 they had exact same reasons others have enlisted here abo...
How do I sort an array of hashes by a value in the hash?
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Hi, is there a way to sort in descending order too? I figure I might want to go 3,2,1...
– tekknolagi
Oct 28 '12 at 6:53
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How to properly seed random number generator
... That will return all the time the very same sequence, in the very same order if called multiple times, that does not look very random to me. Check live example: play.golang.org/p/fHHENtaPv5 3 5 2 5 4 2 5 6 3 1
– Thomas Modeneis
Oct 6 '16 at 13:05
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Aspect Oriented Programming vs. Object-Oriented Programming
...o start with Aspect Oriented Programming:
http://www.jaftalks.com/wp/index.php/introduction-to-aspect-oriented-programming/
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When/Why to use Cascading in SQL Server?
...onship can involve an exclusive "is part of" description. For example, an OrderLine record is part of its parent order, and OrderLines will never be shared between multiple orders. If the Order were to vanish, the OrderLine should as well, and a line without an Order would be a problem.
The canonic...
Android EditText delete(backspace) key event
...ction class. This method is called when key events occur in an IME. But in order to override this, we need to implement a custom EditText which overrides the onCreateInputConnection method, wrapping the default InputConnection object in a proxy class! :|
Sounds complicated, but here's the simplest ...
What is a stack trace, and how can I use it to debug my application errors?
...if(dog == null || dog.firstName == null) return;
The above is the proper order to check for nulls, we start with the base object, dog in this case, and then begin walking down the tree of possibilities to make sure everything is valid before processing. If the order were reversed a NPE could pote...