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Why is there “data” and “newtype” in Haskell? [duplicate]
...ust like normal types
newtype Identity a = Identity a
deriving (Eq, Ord, Read, Show)
-- record syntax is still allowed, but only for one field
newtype State s a = State { runState :: s -> (s, a) }
-- this is *not* allowed:
-- newtype Pair a b = Pair { pairFst :: a, pairSnd :: b }
-- but this ...
Differences between Intent and PendingIntent
I read through some articles and both seem to do the same thing and I was wondering what is the difference between starting the service like that:
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Relatively position an element without it taking up space in document flow
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From reading up a little, it seems you can absolute position an element as long as the parent element is relatively positioned. That means if you have the CSS:
.parent {
position: relative;
}
.parent > .child {
posit...
Implement C# Generic Timeout
...part here was killing the long running task through passing the executor thread from the Action back to a place where it could be aborted. I accomplished this with the use of a wrapped delegate that passes out the thread to kill into a local variable in the method that created the lambda.
I submit...
Pointers in Python?
...ook at the comments on your Q and you'll see that "incredulity" is a widespread reaction -- and the top-voted A is telling you "don't do it, get over it", followed by one that goes "it's just how it is". While you may not "appreciate" Python-knowledgeable people reacting with astonishment to your o...
Python vs Bash - In which kind of tasks each one outruns the other performance-wise? [closed]
...t exactly answer the question. This is one of the best answers I have ever read!
– Jim Mitchener
Feb 13 '19 at 7:55
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What is the benefit of using Fragments in Android, rather than Views?
...ose changes in a back stack that's managed by the activity.
Here you can read more.
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Android splash screen image sizes to fit all devices
...40x960
large (hdpi): 480x800
medium (mdpi): 320x480
small (ldpi): 240x320
Read 9-patch image introduction in Android Developer Guide
Design images that have areas that can be safely stretched without compromising the end result
With this, Android will select the appropriate file for the device's ...
Difference between classification and clustering in data mining? [closed]
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Please read the following information:
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Are non-synchronised static methods thread safe if they don't modify static class variables?
... is not synchronised, but does not modify any static variables is it thread-safe? What about if the method creates local variables inside it? For example, is the following code thread-safe?
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