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Java: Class.this
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It means the this instance of the outer LocalScreen class.
Writing this without a qualifier will return the instance of the inner class that the call is inside of.
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Spring get current ApplicationContext
...e current context, rather it creates another instance of it for you. Which means 1) significant chunk of memory and 2) beans are not shared among these two application contexts.
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Python constructors and __init__
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There is no function overloading in Python, meaning that you can't have multiple functions with the same name but different arguments.
In your code example, you're not overloading __init__(). What happens is that the second definition rebinds the name __init__ to the ...
What's the best CRLF (carriage return, line feed) handling strategy with Git?
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@gatinueta To be more specific, it's a JGit issue. Meaning TeamCity, which also uses JGit, straight up ignores .gitattributes.
– sdds
Jul 1 '14 at 13:48
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What's the difference between Invoke() and BeginInvoke()
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Do you mean Delegate.Invoke/BeginInvoke or Control.Invoke/BeginInvoke?
Delegate.Invoke: Executes synchronously, on the same thread.
Delegate.BeginInvoke: Executes asynchronously, on a threadpool thread.
Control.Invoke: Executes on...
Will HTML5 allow web apps to make peer-to-peer HTTP connections?
... connections; the SOP being worked through thanks to CORS. Of course, this means that each agent (i.e. browser) would have to embed its own WebSocket server (à la Opera Unite).
In the mean time, do it the XMPP/IRC/etc.-way: no peer-to-peer connection but WebSocket connections to a central server (...
When to use cla(), clf() or close() for clearing a plot in matplotlib?
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plt.cla() means clear current axis
plt.clf() means clear current figure
also, there's plt.gca() (get current axis) and plt.gcf() (get current figure)
Read more here: Matplotlib, Pyplot, Pylab etc: What's the difference between these...
How to open a new window on form submit
...ttribute of the elements's form owner. The following keywords have special meanings:
_self: Load the response into the same browsing context as the current one. This value is the default if the attribute is not specified.
_blank: Load the response into a new unnamed browsing context.
_pa...
Which is generally best to use — StringComparison.OrdinalIgnoreCase or StringComparison.InvariantCul
...byte by byte comparison.
Unicode equivalence rules are complicated, which means using method 1) or 2) is more expensive than OrdinalIgnoreCase. The fact that OrdinalIgnoreCase does not perform any special unicode normalization, means that some strings that render in the same way on a computer scree...
Why was “Avoid Enums Where You Only Need Ints” removed from Android's performance tips?
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Adding an enum class does of course mean that your app contains an extra class, so it's not free, but we have to assume that a developer is only adding enums where they're useful. The only really bad use I've seen of enums was in some harmony code where they re...