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LINQ Group By into a Dictionary Object

... this is the way to do it if a non immutable result is desired. ToLookup is immutable. – Amit Nov 12 '14 at 20:15 1 ...
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How to select the first element with a specific attribute using XPath

... not return all books from 'US'. I have tested it mutiple times and under different languages' xpath implementations. /bookstore/book[@location='US'][1] returns the first 'US' book under a bookstore. If there are mutiple bookstores, then it will return the first from each. This is what the OP asked ...
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String isNullOrEmpty in Java? [duplicate]

...lank(str) or StringUtils.isNotBlank(str) from Apache commons-lang. The difference between empty and blank is : a string consisted of whitespaces only is blank but isn't empty. I generally prefer using apache-commons if possible, instead of writing my own utility methods, although that is also pl...
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Rename a file using Java

...; // File (or directory) with new name File file2 = new File("newname"); if (file2.exists()) throw new java.io.IOException("file exists"); // Rename file (or directory) boolean success = file.renameTo(file2); if (!success) { // File was not successfully renamed } To append to the new fil...
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get the latest fragment in backstack

How can I get the latest fragment instance added in backstack (if I do not know the fragment tag & id)? 17 Answers ...
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Getting mouse position in c#

... If you don't want to reference Forms you can use interop to get the cursor position: using System.Runtime.InteropServices; using System.Windows; // Or use whatever point class you like for the implicit cast operator /// <...
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How to find encoding of a file via script on Linux?

...ears to be completely useless for analyzing a file written in English, but if you happen to be looking at something in Estonian, it might solve all your problems. Very helpful tool, that... </sarcasm> – cbmanica Apr 16 '13 at 20:36 ...
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Loaded nib but the 'view' outlet was not set

...e's owner icon on the left bar (top one, looks like a yellow outlined box) If you don't see the right-hand sidebar, click on the third icon above "view" in your toolbar. This will show the right-hand sidebar In the right-hand sidebar, click on the third tab--the one that looks a bit like a newspaper...
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Maven command to list lifecycle phases along with bound goals?

... but I can't find an easy way to list the goals associated for each maven lifecycle phase for a given project. 5 Answers ...
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Objective-C ARC: strong vs retain and weak vs assign

... have to use either weak or unsafe_unretained (which is unsafe, obviously) if you don't want to retain the property. – cobbal Jan 19 '12 at 15:07 5 ...