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What is the difference between loose coupling and tight coupling in the object oriented paradigm?
...s can maintain a list of classes that inherit from 'Observer', without actually knowing the concrete type of those classes, this is an instance of loose coupling. The Subject doesn't depend on any of its Observers or their internal concerns. The observers don't depend on the Subject or any of its co...
A generic list of anonymous class
... o, o1 }.ToList();
There are lots of ways of skinning this cat, but basically they'll all use type inference somewhere - which means you've got to be calling a generic method (possibly as an extension method). Another example might be:
public static List<T> CreateList<T>(params T[] el...
Git: How to update/checkout a single file from remote origin master?
...fetch
git checkout origin/master -- path/to/file
The fetch will download all the recent changes, but it will not put it in your current checked out code (working area).
The checkout will update the working tree with the particular file from the downloaded changes (origin/master).
At least this w...
How to prove that a problem is NP complete?
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As far as I remember, there is a theorem called the Cook-Levin theorem which states that SAT is NP-complete. That proof is quite a bit more complicated than what I outlined above and I don't think I can explain it in my own words.
– Laila Agaev
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In Windows cmd, how do I prompt for user input and use the result in another command?
...o accept user input and then use the results of that input as part of the call to additional commands.
12 Answers
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How to center a “position: absolute” element
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Smartest answer. I have just checked it and it works on all browsers. It does not work on IE8 but it works on IE>=9
– Roger
Dec 11 '13 at 9:43
13
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Suppress deprecated import warning in Java
...ate source of truth is javac for which the fix doesn't work. This answer really answers the question: stackoverflow.com/a/20909204/2032701
– Ruslan
Sep 26 '17 at 14:12
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How to change fontFamily of TextView in Android
...d fonts in Android. How do I select one of the pre-defined ones? I don't really need to define my own TypeFace but all I need is something different from what it shows right now.
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How to change the color of a CheckBox?
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This will automatically be used when you use CheckBox in your layouts. You should only need to manually use this class when writing custom views.
– 최봉재
Apr 12 '17 at 9:22
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In what cases will HTTP_REFERER be empty
...tched from a https URL to a different https URL.
has security software installed (antivirus/firewall/etc) which strips the referrer from all requests.
is behind a proxy which strips the referrer from all requests.
visited the site programmatically (like, curl) without setting the referrer header (se...