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SQL WHERE.. IN clause multiple columns
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Numpy `logical_or` for more than two arguments
Numpy's logical_or function takes no more than two arrays to compare. How can I find the union of more than two arrays? (The same question could be asked with regard to Numpy's logical_and and obtaining the intersection of more than two arrays.)
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How to write a multidimensional array to a text file?
In another question, other users offered some help if I could supply the array I was having trouble with. However, I even fail at a basic I/O task, such as writing an array to a file.
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Is there any way to enforce typing on NSArray, NSMutableArray, etc.?
Can I make a NSMutableArray instance where all the elements are of type SomeClass ?
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Hashset vs Treeset
I've always loved trees, that nice O(n*log(n)) and the tidiness of them. However, every software engineer I've ever known has asked me pointedly why I would use a TreeSet . From a CS background, I don't think it matters all that much which you use, and I don't care to mess around with hash functi...
Why are empty catch blocks a bad idea? [closed]
I've just seen a question on try-catch , which people (including Jon Skeet) say empty catch blocks are a really bad idea? Why this? Is there no situation where an empty catch is not a wrong design decision?
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What does the star operator mean, in a function call?
What does the * operator mean in Python, such as in code like zip(*x) or f(**k) ?
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What does 'var that = this;' mean in JavaScript?
In a JavaScript file I saw:
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How to generate a random number between a and b in Ruby?
To generate a random number between 3 and 10, for example, I use: rand(8) + 3
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What's the point of 'const' in the Haskell Prelude?
Looking through the Haskell Prelude, I see a function const :
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