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.gitignore exclude folder but include specific subfolder

...ing /* is significant: The pattern dir/ excludes a directory named dir and (implicitly) everything under it. With dir/, Git will never look at anything under dir, and thus will never apply any of the “un-exclude” patterns to anything under dir. The pattern dir/* says nothing about dir itself...
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How to convert int[] to Integer[] in Java?

I'm new to Java and very confused. 13 Answers 13 ...
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What does -D_XOPEN_SOURCE do/mean?

...nclude definitions for some extra functions that are defined in the X/Open and POSIX standards. This will give you some extra functionality that exists on most recent UNIX/BSD/Linux systems, but probably doesn't exist on other systems such as Windows. The numbers refer to different versions of the...
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C#/Linq: Apply a mapping function to each element in an IEnumerable?

...Forest/Trees Visual Occlusion Problem", I guess :) – Andreas Baus Aug 25 '11 at 9:00 2 Be aware t...
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Dealing with “Xerces hell” in Java/Maven?

... users are "touched" by this problem at some point. Unfortunately, understanding the problem requires a bit of knowledge about the history of Xerces... ...
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CSS vertical alignment text inside li

I am displaying number of boxes in a row with fix height and width, generated from tags. now I need to align the text in the vertical center. The CSS vertical-align has no impact, maybe I am missing something??? ...
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Rails: how do I validate that something is a boolean?

...ield (the field would not be valid for a false value). But in both Rails 3 and 4, having validates :field, inclusion: [true, false] would test for inclusion in a list of values, with the side-effect to test for the field's presence (unless one of those values is nil of course). ...
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JQuery to load Javascript file dynamically

...tions ) { // Allow user to set any option except for dataType, cache, and url options = $.extend( options || {}, { dataType: "script", cache: true, url: url }); // Use $.ajax() since it is more flexible than $.getScript // Return the jqXHR object so we c...
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How to set specific java version to Maven

On my machine I have two java versions installed: (1.6 and 1.7 installed manually by me). I need both of them for different projects. But for Maven I need 1.7, now my Maven uses 1,6 java version, how can I set Maven to use 1.7? ...
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How to run a command before a Bash script exits?

If a Bash script has set -e , and a command in the script returns an error, how can I do some cleanup before the script exits? ...