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How to have a transparent ImageButton: Android
...on performance since a full alpha-blended composite will be performed each time the Surface changes." from developer.android.com/reference/android/view/SurfaceView.html
– Quintin Robinson
Aug 4 '10 at 6:02
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How to list containers in Docker
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Note that some time ago there was an update to this command. It will not show the container size by default (since this is rather expensive for many running containers). Use docker ps -s to display container size as well.
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How many socket connections can a web server handle?
...d somewhere a server/machine can only handle 64,000 TCP connections at one time, is this true? How many could any type of hosting handle regardless of bandwidth? I'm assuming HTTP works over TCP.
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py2exe - generate single executable file
...ctly a single executable, as you need to install the Microsoft Visual C runtime DLL.
– Kevin Smyth
Sep 28 '12 at 13:56
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How can I delete the current line in Emacs?
... whole lines
M--5 C-S-backspace # deletes previous 5 whole lines
Sometimes I also find C-x z helpful:
C-S-backspace # delete 1 whole line
C-x z # repeat last command
z # repeat last command again.
# Press z as many times as yo...
How to change time and timezone in iPhone simulator?
How do I change time and time zone in the iPhone simulator?
11 Answers
11
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What is the purpose of Rank2Types?
...hem in when it analyzes the program for compilation. (This is all compile-time stuff, I believe, with no runtime overhead.)
But Haskell's automatic handling of this means that it assumes that "∀" never appears on the left-hand branch of a function ("→") type. Rank2Types and RankNTypes turn of...
Proper practice for subclassing UIView?
...es to other objects can be sent safely from within awakeFromNib—by which time it’s assured that all the objects are unarchived and initialized (though not necessarily awakened, of course)
It's also worth noting that with autolayout you shouldn't explicitly set the frame of your view. Instead y...
What is a covariant return type?
...more specific return types when overriding
methods.
Help in preventing run-time ClassCastExceptions on returns
reference:
www.geeksforgeeks.org
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How to convert String to Long in Kotlin?
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Actually, 90% of the time you also need to check the 'long' is valid, so you need:
"10".toLongOrNull()
There is an 'orNull' equivalent for each 'toLong' of the basic types, and these allow for managing invalid cases with keeping with the Kotli...