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What is the difference between Strategy design pattern and State design pattern?
.... In the pattern, states must be polymorphic: each state presents the same API. In the machine, transitioning to a new state can result in a new set of operations. Thus the pattern focuses more on designing the behavior within states, while the machine focuses more on designing the transitions betwe...
What is the difference between JavaConverters and JavaConversions in Scala?
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As explained in the API, JavaConversions is a set of implicit conversions that transforms java collections into related scala collection.
You can use it with an import collection.JavaConversions._. When necessary, the compiler will automaticall...
C# Thread safe fast(est) counter
...tal number of values: 50,206,378
https://docs.microsoft.com/en-us/dotnet/api/system.threading.interlocked.increment?view=netcore-3.0
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Execute AsyncTask several times
...just call your task like new MyAsyncTask().execute("");
From the AsyncTask API docs:
Threading rules
There are a few threading rules that must be followed for this class to work properly:
The task instance must be created on the UI thread.
execute(Params...) must be invoked on the UI thread.
Do not...
Returning a C string from a function
...rent methodologies to understand "my string".
If you ever use the Windows API (which is in C++), you'll see quite regularly function parameters like: "LPCSTR lpszName". The 'sz' part represents this notion of 'string-zero': an array of bytes with a null (/zero) terminator.
Clarification:
For the ...
Difference between add(), replace(), and addToBackStack()
...ill behave. WIll it replace all the frgaments in that container or android api have a method that accept three arguments, i.e. frgamentContainer, new fragment and with whom to replace.
– ved
Jun 21 '15 at 18:20
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How to detect iPhone 5 (widescreen devices)?
...ime.
iOS 6 also offers new features about this.
Be sure to read the iOS 6 API changelog on Apple Developer website.
And check the new iOS 6 AutoLayout capabilities.
That said, if you really need to detect the iPhone 5, you can simply rely on the screen size.
[ [ UIScreen mainScreen ] bounds ].siz...
When to call activity context OR application context?
...wedException. These crashes occur on a wide range of Android versions from API 15 up to 22.
https://possiblemobile.com/2013/06/context/#comment-2443283153
Because it's not guaranteed that all operations described as supported by Application Context in the table below will work on all Android dev...
What do the different readystates in XMLHttpRequest mean, and how can I use them?
...peration is complete.
(From https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/readyState)
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Why #define TRUE (1==1) in a C boolean macro instead of simply as 1?
...called "Clean C" (which compiles either as C or C++) or if you are writing API header files that can be used by C or C++ programmers.
In C translation units, 1 == 1 has exactly the same meaning as 1; and 1 == 0 has the same meaning as 0. However, in the C++ translation units, 1 == 1 has type bool....