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What's the difference between HEAD, working tree and index, in Git?

...n that I'm not sure if I can follow through on or even whether it's a good idea, such as a conceptually demanding refactoring or changing a representation type — I checkpoint my work into the index. If this is the first change I've made since my last commit, then I can use the local repository as ...
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What is the difference between Gemfile and Gemfile.lock in Ruby on Rails

...0.0) requires bundler (>= 1.3.0, < 2.0)), which causes problems. Any idea how to avoid those 'open' dependencies? – Guillermo Grau Apr 4 '14 at 9:23 ...
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How do I expire a PHP session after 30 minutes?

... Is MVC a good idea even when the project is small, with a single programmer? I feel like I should be making my own projects in the MVC model (or solve the problem THEN make it MVC) but with a lack of experience with MVC it just becomes a ...
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Which commit has this blob?

...e: It looks like somebody already did this. That one uses the same general idea but the details are different and the implementation is much shorter. I don't know which would be faster but performance is probably not a concern here! Update 2: For what it's worth, my implementation is orders of magn...
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Why is not in HTML 5 Tag list while is?

... <center> was a bad idea to begin with - it's a block-level element but its purpose is to dictate something stylistic. Even without CSS it should not have been an element, so removing it was removing a poor design decision. <font> made a...
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What is the best (and safest) way to merge a Git branch into master?

...gly "merged master into origin/master" merge commit. So it's always a good idea to make a pull before the merge – KingCrunch Dec 24 '15 at 22:47 7 ...
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how to use javascript Object.defineProperty

...u don't need to actually use () to call... I don't understand what was the idea when they invented this thing. Functions are totally the same: jsbin.com/bugipi/edit?js,console,output – vsync Aug 6 '15 at 15:36 ...
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Visual Studio 2013 and BitBucket

...Here you will find the "Create Repository" button. Click it. – I have no idea why this button is located here. Give your repository a new name. For consistency's sake, I name my repository the same name as the solution. Click the "Create Repository" button Once your new repository has been succes...
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string sanitizer for filename

...it started putting - between every character, like r-u-l-e-s and I have no idea why this happen. Sure is that it is not fault of the function, but just asking - what might be reason of such behavior? Wrong encoding? – user5147563 Mar 18 '17 at 14:30 ...
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Adding an identity to an existing column

... If my memory is correct, I got the idea from this article: sqlservercentral.com/articles/T-SQL/61979 – Justin Grant Aug 29 '11 at 6:05 2 ...