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getApplication() vs. getApplicationContext()
...nt the Application class you registered in the Manifest, you should never call getApplicationContext() and cast it to your application, because it may not be the application instance (which you obviously experienced with the test framework).
Why does getApplicationContext() exist in the first place...
How to convert image to byte array
... been non-optimal because they changed the bit depth of the pixels (24-bit vs. 32-bit) or ignored the image's resolution (dpi).
// ImageConverter object used to convert byte arrays containing JPEG or PNG file images into
// Bitmap objects. This is static and only gets instantiated once.
pri...
Call by name vs call by value in Scala, clarification needed
As I understand it, in Scala, a function may be called either
16 Answers
16
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list.clear() vs list = new ArrayList(); [duplicate]
... the array copy that occurs when size exceeds capacity on an .add(Object) call.
– Platinum Azure
Aug 5 '11 at 19:12
...
jQuery attr vs prop?
...
Unfortunately none of your links work :(
Some insight though, attr is for all attributes. prop is for properties.
In older jQuery versions (<1.6), we just had attr. To get to DOM properties such as nodeName, selectedIndex, or defaultValue you had to do something like:
var elem = $("#foo")[0];
if...
Is there a format code shortcut for Visual Studio?
...s, e.g. I have set Add/remove braces for single-line control statements (really bad description because the user has no idea what happens when you activate it^^) so the formatter always changes if(foo) bar; to if(foo) { bar; }. executing Edit.FormatSelection doesn’t change that. Might be a bug, go...
Why is there “data” and “newtype” in Haskell? [duplicate]
...peek inside.
Couldn't the compiler handle this for itself.
No, not really—this is a case where as the programmer you get to decide whether the constructor is strict or lazy. To understand when and how to make constructors strict or lazy, you have to have a much better understanding of lazy ...
HashSet vs LinkedHashSet
...ax(2*c.size(), 11), .75f, true); // <-- boolean dummy argument
addAll(c);
}
And (one example of) a HashSet constructor that takes a boolean argument is described, and looks like this:
/**
* Constructs a new, empty linked hash set. (This package private
* constructor is only used by Li...
What are the pros and cons of performing calculations in sql vs. in your application
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It depends on a lot of factors - but most crucially:
complexity of calculations (prefer doing complex crunching on an app-server, since that scales out; rather than a db server, which scales up)
volume of data (if you need to access/aggregate a lot of data, doing it at ...
“Automatic” vs “Automatic (Delayed start)”
When installing Windows services there are two options for automatically starting a Windows service on Windows startup. One is Automatic , and the other is Automatic (Delayed start) . What is the difference between these two in detail?
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