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How do 20 questions AI algorithms work?

... You can think of it as the Binary Search Algorithm. In each iteration, we ask a question, which should eliminate roughly half of the possible word choices. If there are total of N words, then we can expect to get an answer after log2(N) quest...
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What is the Python equivalent of static variables inside a function?

... A bit reversed, but this should work: def foo(): foo.counter += 1 print "Counter is %d" % foo.counter foo.counter = 0 If you want the counter initialization code at the top instead of the bottom, you can create a deco...
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Is it possible to determine whether ViewController is presented as Modal?

Is it possible to check inside ViewController class that it is presented as modal view controller? 14 Answers ...
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Loop inside React JSX

... Think of it like you're just calling JavaScript functions. You can't use a for loop where the arguments to a function call would go: return tbody( for (var i = 0; i < numrows; i++) { ObjectRow() } ) See how the ...
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Remove files from Git commit

I am using Git and I have committed few files using 29 Answers 29 ...
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Generating random strings with T-SQL

... generate a pseudorandom alphanumeric string using T-SQL, how would you do it? How would you exclude characters like dollar signs, dashes, and slashes from it? ...
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How can I tell if a DOM element is visible in the current viewport?

...follow | edited Jan 31 at 11:38 Peter Mortensen 26.5k2121 gold badges9292 silver badges122122 bronze badges ...
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Rolling or sliding window iterator?

I need a rolling window (aka sliding window) iterable over a sequence/iterator/generator. Default Python iteration can be considered a special case, where the window length is 1. I'm currently using the following code. Does anyone have a more Pythonic, less verbose, or more efficient method for d...
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Where is C not a subset of C++? [closed]

... If you compare C89 with C++ then here are a couple of things No tentative definitions in C++ int n; int n; // ill-formed: n already defined int[] and int[N] not compatible (no compatible types in C++) int a[1]; int (*ap)[] = &a; // ill-...
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Java int to String - Integer.toString(i) vs new Integer(i).toString()

Sometimes java puzzles me. I have a huge amount of int initializations to make. 11 Answers ...