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What is “lifting” in Haskell?
I don't understand what "lifting" is. Should I first understand monads before understanding what a "lift" is? (I'm completely ignorant about monads, too :) Or can someone explain it to me with simple words?
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Image comparison - fast algorithm
...and then compare any new images against that to determine if the new image is an exact (or close) duplicate of the base.
9 ...
Ship an application with a database
...your application requires a database and it comes with built in data, what is the best way to ship that application? Should I:
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MFC Grid control 2.27 - C/C++ - 清泛网移动版 - 专注C/C++及内核技术
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Download Grid Control Source and Demo - 311.9 KB
Preface
This grid is the work of thousands of hours of squinting at pixels, hunting memory leaks, adding new features, fixing new bugs and beating the code by force of will into a form that is as feature rich and useable as something of...
setTimeout or setInterval?
...000ms, runs the function and then sets another timeout. So the wait period is actually a bit more than 1000ms (or a lot more if your function takes a long time to execute).
Although one might think that setInterval will execute exactly every 1000ms, it is important to note that setInterval will als...
Is Chrome's JavaScript console lazy about evaluating arrays?
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Thanks for the comment, tec. I was able to find an existing unconfirmed Webkit bug that explains this issue: https://bugs.webkit.org/show_bug.cgi?id=35801 (EDIT: now fixed!)
There appears to be some debate regarding just how much of a bug it is and whether it's fixable. It do...
What exactly are unmanaged resources?
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Managed resources basically means "managed memory" that is managed by the garbage collector. When you no longer have any references to a managed object (which uses managed memory), the garbage collector will (eventually) release that memory for you.
Unmanaged resources are then e...
How can I maintain fragment state when added to the back stack?
...er, when I return to FragmentA (by pressing back), a totally new FragmentA is created and the state it was in is lost. I get the feeling I'm after the same thing as this question, but I've included a complete code sample to help root out the issue:
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Difference between reduce and foldLeft/fold in functional programming (particularly Scala and Scala
... difference, not mentioned in any other stackoverflow answer relating to this topic clearly, is that reduce should be given a commutative monoid, i.e. an operation that is both commutative and associative. This means the operation can be parallelized.
This distinction is very important for Big Dat...
How to create a memory leak in Java?
...tores a reference to itself in a ThreadLocal. Allocating the extra memory is optional (leaking the class instance is enough), but it will make the leak work that much faster.
The application clears all references to the custom class or the ClassLoader it was loaded from.
Repeat.
Due to the way Th...