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Why do we have map, fmap and liftM?

...hing Haskell to beginners the very general type of map made error messages more difficult to understand. In my opinion this wasn't the right way to solve the problem. -- What's the point of map in Haskell, when there is fmap? ...
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PreparedStatement IN clause alternatives?

...railing comma. sb.setLength(Math.max(sb.length() - 1, 0)); // For more than 1 parameter, replace the single parameter with // multiple parameter placeholders. if (sb.length() > 1) { sql = sql.replace("(?)", "(" + sb + ")"); } // Return the modified comma-delimite...
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Why does the lock object have to be static?

... a lock at the appropriate / chosen granularity. Sometimes that is static. More often, IMO, it isn't - but is instance based. The main time you see a static lock is for a global cache, or for deferred loading of global data / singletons. And in the latter, there are better ways of doing it anyway. ...
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How to get the Power of some Integer in Swift language?

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Command to change the default home directory of a user

... Not only move the content, I see it more like move whole folder = original folder (/home/username typically) is removed. – Betlista Jul 4 '17 at 11:28 ...
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Load a WPF BitmapImage from a System.Drawing.Bitmap

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What's the difference between a file descriptor and file pointer?

...n compared to open(). In general you should be using fopen() since that is more portable and you can use all the other standard C functions that uses the FILE struct, i.e., fprintf() and family. There are no performance issues using either. ...
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How to access the ith column of a NumPy multidimensional array?

... And if you want to access more than one column at a time you could do: >>> test = np.arange(9).reshape((3,3)) >>> test array([[0, 1, 2], [3, 4, 5], [6, 7, 8]]) >>> test[:,[0,2]] array([[0, 2], [3, 5], ...
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Why doesn't a python dict.update() return the object?

... @Paul, and that's exactly what you're doing -- with two statements (much more readable than the nested way you wanted) which to you "felt really cumbersome". Editing my answer to show how to avoid creating a altogether, btw, – Alex Martelli Sep 21 '09 at 14:1...
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Browser statistics on JavaScript disabled [closed]

...ly awesome stuff going down with Javascript which actually makes sites far more accessible! - where do we draw the line here? "Sorry, your computer is too old and slow to render this website." OR "Sorry, 99.9% of the planet, we've presented you with a sub-optimal 1993 experience because 0.1% of yo...