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How to get the primary IP address of the local machine on Linux and OS X? [closed]

... I found a problem, while this works on OS X it does return more than one IP, a list of IPs. It seems that the first one is the right one but still this would break my logic. See gist.github.com/ssbarnea/31b9dcb0f8fd528b958c -- it also returns the vnic ones that are active but used by...
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How do you use variables in a simple PostgreSQL script?

... Being completely new to PostgreSQL this threw me for a while, here's some more tips: + Make sure you end your statements with a semicolon! + Because there is no variable identifier you may want to use an _ or something similar to avoid ambiguous column names. + You can set the variable to a value i...
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Escape quotes in JavaScript

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Python timedelta in years

... You need more than a timedelta to tell how many years have passed; you also need to know the beginning (or ending) date. (It's a leap year thing.) Your best bet is to use the dateutil.relativedelta object, but that's a 3rd party m...
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Finding the average of a list

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What is an initialization block?

... nice answer by aioobe adding few more points public class StaticTest extends parent { static { System.out.println("inside satic block"); } StaticTest() { System.out.println("inside constructor of child"); } { Sy...
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Is there a reason for C#'s reuse of the variable in a foreach?

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Recommended way to embed PDF in HTML?

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JavaScript: Check if mouse button down?

... Regarding Pax' solution: it doesn't work if user clicks more than one button intentionally or accidentally. Don't ask me how I know :-(. The correct code should be like that: var mouseDown = 0; document.body.onmousedown = function() { ++mouseDown; } document.body.onmouseup = ...
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Are string.Equals() and == operator really same? [duplicate]

... Great answer. Wouldn't it make more sense to use String.Equals(x, y) instead of object.Equals(x, y) to avoid the null issue? – Chaulky Jun 4 '13 at 18:29 ...