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How to determine if one array contains all elements of another array
...ength as the smaller-array if all elements in it are present in the larger one.
– JosephK
Aug 26 '17 at 10:47
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Best way to remove an event handler in jQuery?
...ut type="image" . This acts like the cell notes in Microsoft Excel. If someone enters a number into the text box that this input-image is paired with, I setup an event handler for the input-image . Then when the user clicks the image , they get a little popup to add some notes to the data.
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What is N-Tier architecture?
...mmend it, you can host logical tier and database on the same box.
Edit: One implication is that presentation tier and the logic tier (sometimes called Business Logic Layer) needs to cross machine boundaries "across the wire" sometimes over unreliable, slow, and/or insecure network. This is very d...
Android RatingBar change star colors [closed]
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Step #1: Create your own style, by cloning one of the existing styles (from $ANDROID_HOME/platforms/$SDK/data/res/values/styles.xml), putting it in your own project's styles.xml, and referencing it when you add the widget to a layout.
Step #2: Create your own LayerDr...
How is location accuracy measured in Android?
Does anyone know the proper interpretation of the accuracy measurements returned by getAccuracy()? For instance, are they calculated as:
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What does the caret operator (^) in Python do?
...
It's a bitwise XOR (exclusive OR).
It results to true if one (and only one) of the operands (evaluates to) true.
To demonstrate:
>>> 0^0
0
>>> 1^1
0
>>> 1^0
1
>>> 0^1
1
To explain one of your own examples:
>>> 8^3
11
Think about i...
What is the purpose of wrapping whole Javascript files in anonymous functions like “(function(){ … }
... final ()) that you just defined. So the major advantage of this as I mentioned before, is that you can have private methods/functions and properties:
(function() {
var private_var;
function private_function() {
//code
}
})();
In the first example, you would explicitly invoke globa...
How do you switch pages in Xamarin.Forms?
... built-in:
NavigationPage, where the next page slide in,
TabbedPage, the one you don't like
CarouselPage, that allows for switching left and right to next/prev pages.
On top of this, all pages also supports PushModalAsync() which just push a new page on top of the existing one.
At the very end,...
What is the dual table in Oracle?
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It is a dummy table with one element in it. It is useful because Oracle doesn't allow statements like
SELECT 3+4
You can work around this restriction by writing
SELECT 3+4 FROM DUAL
instead.
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What is the tilde (~) in the enum definition?
...
~ is the unary one's complement operator -- it flips the bits of its operand.
~0 = 0xFFFFFFFF = -1
in two's complement arithmetic, ~x == -x-1
the ~ operator can be found in pretty much any language that borrowed syntax from C, including...