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Set focus on TextBox in WPF from view model
... not focus anything anymore. It doesn't work. What have those 70 upvoters done exactly?
– ygoe
Feb 26 '13 at 23:02
4
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What is “lifting” in Scala?
...fined over the whole of A but whose values are of type Option[B]
This is done by the explicit invocation of the method lift on PartialFunction.
scala> val pf: PartialFunction[Int, Boolean] = { case i if i > 0 => i % 2 == 0}
pf: PartialFunction[Int,Boolean] = <function1>
scala> p...
Start / Stop a Windows Service from a non-Administrator user account
...t Starting/Stopping a Windows Service from a non-Admin user account, if anyone needs to know.
Primarily, there are two ways in which to Start / Stop a Windows Service.
1. Directly accessing the service through logon Windows user account.
2. Accessing the service through IIS using Network Se...
Xcode doesn't show the line that causes a crash
...ts behavior.
Run your project and reproduce the exception.
Also you mentioned that you linked to some 3rd party libraries/frameworks. If the exception is occurring within those frameworks then you are going to have a hard time since the code is compiled and Xcode can't actually show you the line ...
RSS Feeds in ASP.NET MVC
...the RSS. In your action method, just set the appropriate content type. The one benefit of this approach is it is easy to understand what is being rendered and how to add custom elements such as geolocation.
Then again, the other approaches listed might be better, I just haven't used them. ;)
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Rails update_attributes without save?
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in case of .attributes = val, if your model has_one and accepts_nested_attributes_for another model, passing that_model_attributes (without id) will delete the existing has_one model, even if you didn't persist (e.g. save). But assign_attributes doesn't behave like that.
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Converting an array of objects to ActiveRecord::Relation
... a useful tool which you shouldn't be reluctant to use. And now you have a one-liner converting an array to a relation.
map(&:id) will turn your array of objects to an array containing only their id's. And passing an array to a where clause will generate a SQL statement with IN that looks somet...
$on and $broadcast in angular
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One thing you should know is $ prefix refers to an Angular Method, $$ prefixes refers to angular methods that you should avoid using.
below is an example template and its controllers, we'll explore how $broadcast/$on can hel...
Understanding Python super() with __init__() methods [duplicate]
...tance's method, it will then lookup the next method in line (probably this one) resulting in recursion, probably causing a logical failure (in the answerer's example, it does) or a RuntimeError when the recursion depth is exceeded.
>>> class Polygon(object):
... def __init__(self, id):...
How can I make a UITextField move up when the keyboard is present - on starting to edit?
...l only need a ScrollView if the contents you have now do not fit in the iPhone screen. (If you are adding the ScrollView as the superview of the components just to make the TextField scroll up when keyboard comes up, then it's not needed.)
The standard way to prevent the TextFields from being covere...