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Break a previous commit into multiple commits

...t recent commit, first: $ git reset HEAD~ Now commit the pieces individually in the usual way, producing as many commits as you need. B) Splitting a commit farther back This requires rebasing, that is, rewriting history. To find the correct commit, you have several choices: If it was three co...
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What's faster, SELECT DISTINCT or GROUP BY in MySQL?

... They are essentially equivalent to each other (in fact this is how some databases implement DISTINCT under the hood). If one of them is faster, it's going to be DISTINCT. This is because, although the two are the same, a query optimizer wo...
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In a Bash script, how can I exit the entire script if a certain condition occurs?

... @CMCDragonkai, usually any non-zero code will work. If you don't need anything special, you can just use 1 consistently. If the script is meant to be run by another script, you may want to define your own set of status code with particular mea...
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Get all column names of a DataTable into string array using (LINQ/Predicate)

...ase post it as a new question and include details of your code. But essentially: A DataGrid is not the same as a DataTable. – Daniel Hilgarth May 17 '13 at 8:08 3 ...
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What is the difference between public, private, and protected?

...ly. protected scope when you want to make your property/method visible in all classes that extend current class including the parent class. If you don't use any visibility modifier, the property / method will be public. More: (For comprehensive information) PHP Manual - Visibility ...
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Anatomy of a “Memory Leak”

... seen is in Chapter 7 of the free Foundations of Programming e-book. Basically, in .NET a memory leak occurs when referenced objects are rooted and thus cannot be garbage collected. This occurs accidentally when you hold on to references beyond the intended scope. You'll know that you have leaks w...
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How do I enable the column selection mode in Eclipse?

News wrote that Eclipse 3.5 finally supports column selection. Unfortunately I don't know HOW to enable it. I tried pressing the ALT-key like I am used to in Visual Studio and all other Microsoft products but that had no effect. ...
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How to clone ArrayList and also clone its contents?

... You can't do it generically, though. clone() is not part of the Cloneable interface. – Michael Myers♦ Apr 3 '09 at 20:47 13 ...
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How to skip over an element in .map()?

...nce it has some cost, you can use the more general .reduce(). You can generally express .map() in terms of .reduce: someArray.map(function(element) { return transform(element); }); can be written as someArray.reduce(function(result, element) { result.push(transform(element)); return result; }...
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How to list the size of each file and directory and sort by descending size in Bash?

... @ErikTrautman to list the files also you need to add -a and use --all instead of --max-depth=1 like so du -a -h --all | sort -h – Franco Jun 14 '14 at 1:40 ...