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How to find the kth largest element in an unsorted array of length n in O(n)?
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This is called finding the k-th order statistic. There's a very simple randomized algorithm (called quickselect) taking O(n) average time, O(n^2) worst case time, and a pretty complicated non-randomized algorithm (called introselect) taking O(n) worst case time. There's some info on Wikipedia, bu...
Converting bool to text in C++
...any way to convert a boolean value to a string such that 1 turns to "true" and 0 turns to "false"? I could just use an if statement, but it would be nice to know if there is a way to do that with the language or standard libraries. Plus, I'm a pedant. :)
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How do you configure an OpenFileDialog to select folders?
...owserDialog, but I've never really liked that dialog. It starts too small and doesn't let me take advantage of being able to type a path.
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Yank file name / path of current buffer in Vim
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TL;DR
:let @" = expand("%")>
this will copy the file name to the unamed register, then you can use good old p to paste it. and of course you can map this to a key for quicker use.
:nmap cp :let @" = expand("%")<cr>
you can also use ...
How to remove the border highlight on an input text element
...'focused' (currently selected/tabbed into), many browsers (at least Safari and Chrome) will put a blue border around it.
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Why does Azure deployment take so long?
I'm trying to understand why it can take from 20-60min to deploy a small application to Azure (using the configuration/package upload method, not from within VS).
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SecurityError: Blocked a frame with origin from accessing a cross-origin frame
I am loading an <iframe> in my HTML page and trying to access the elements within it using Javascript, but when I try to execute my code, I get the following error:
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Static table view outside UITableViewController
After the new Xcode update, my app doesn't validate and shows this error:
4 Answers
4
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When to use wrapper class and primitive type
...have mentioned that certain constructs such as Collections require objects and that objects have more overhead than their primitive counterparts (memory & boxing).
Another consideration is:
It can be handy to initialize Objects to null or send null parameters into a method/constructor to indic...
Why is there no GIL in the Java Virtual Machine? Why does Python need one so bad?
...t need a GIL (which is why it can perfectly be implemented on JVM [Jython] and .NET [IronPython], and those implementations multithread freely). CPython (the popular implementation) has always used a GIL for ease of coding (esp. the coding of the garbage collection mechanisms) and of integration of ...