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What is the use of ObservableCollection in .net?
...ed,
INotifyPropertyChanged
As such it is very useful when you want to know when the collection has changed. An event is triggered that will tell the user what entries have been added/removed or moved.
More importantly they are very useful when using databinding on a form.
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Haskell Type vs Data Constructor
...ith how binary trees work, just hang in there. You don't actually need to know how binary trees work, only that this one stores Strings in some way.
We also see that both data constructors take a String argument – this is the String they are going to store in the tree.
But! What if we also wante...
Pointer to class data member “::*”
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Here's a real-world example I am working on right now, from signal processing / control systems:
Suppose you have some structure that represents the data you are collecting:
struct Sample {
time_t time;
double value1;
double value2;
double value3;
};
Now ...
Is Java really slow?
... use standard libraries).
There is no excuse for "slow" Java applications now. Developers and legacy code/libraries are to blame, far more than the language. Also, blame anything 'enterprise.'
In fairness to the "Java is slow" crowd, here are areas where it is still slow (updated for 2013):
Libr...
How to properly match varargs in Mockito
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for info anyVararg is now deprecated: "@deprecated as of 2.1.0 use any()"
– alexbt
Nov 13 '16 at 20:12
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Javascript date.getYear() returns 111 in 2011? [duplicate]
...be entirely honest, I suspect it was probably me who read W3Schools. Every now and again I delve into there and usually begin regretting it fairly quickly.
– Mark Henderson
Jul 24 '12 at 21:57
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How to detect if app is being built for device or simulator in Swift
In Objective-C we can know if an app is being built for device or simulator using macros:
20 Answers
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WKWebView not loading local files under iOS 8
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They finally solved the bug! Now we can use -[WKWebView loadFileURL:allowingReadAccessToURL:].
Apparently the fix was worth some seconds in WWDC 2015 video 504 Introducing Safari View Controller
For iOS8 ~ iOS10 (Swift 3)
As Dan Fabulish's answer s...
How do Python functions handle the types of the parameters that you pass in?
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Python is strongly typed because every object has a type, every object knows its type, it's impossible to accidentally or deliberately use an object of a type "as if" it was an object of a different type, and all elementary operations on the object are delegated to its type.
This has nothing to ...
Checking in packages from NuGet into version control?
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No
Since this question was asked there is now an easy workflow to use NuGet without commiting packages to source control
From your package manager console you need to install the 'NuGetPowerTools':
Install-Package NuGetPowerTools
Then to enable your projects to s...