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Undo git update-index --skip-worktree

...git-update-index.html, use git ls-files -v to see the "assume unchanged" and "skip-worktree" files marked with a special letter. The "skip-worktree" files are marked with S. Edit: As @amacleod mentioned, making an alias to list all the hidden files is a nice trick to have so that you don't need t...
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Memcache Vs. Memcached [duplicate]

Someone can explain me the difference between Memcache and Memcached in PHP environment? What are the advantages of one over the other? Can you also suggest the criteria used to choose between one or the other? ...
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Multiple Type Constraints in Swift

... Any way to do the same thing with classes and structs in the type contraint expression? e.g. <T where T:SomeStruct, T:AnotherStruct>? For classes the compiler appears to interpret this as saying "T is a subclass of both", and for structs it just complains that ...
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Install MySQL on Ubuntu without a password prompt

...nk root password.) If your shell doesn't support here-strings (zsh, ksh93 and bash support them), use: echo ... | sudo debconf-set-selections share | improve this answer | ...
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Does functional programming replace GoF design patterns?

Since I started learning F# and OCaml last year, I've read a huge number of articles which insist that design patterns (especially in Java) are workarounds for the missing features in imperative languages. One article I found makes a fairly strong claim : ...
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Circular gradient in android

...ying to make a gradient that emits from the middle of the screen in white, and turns to black as it moves toward the edges of the screen. ...
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Rails 3.1: Engine vs. Mountable App

Can someone help me understand the differences between a Rails Engine and a Mountable app? In Rails 3.1, you can create either one with the "rails new plugin ___ " command. ...
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What's the difference between [ and [[ in Bash? [duplicate]

I looked at bash man page and the [[ says it uses Conditional Expressions. Then I looked at Conditional Expressions section and it lists the same operators as test (and [ ). ...
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The object cannot be deleted because it was not found in the ObjectStateManager

...ext, outside of a TransactionScope. Moved the parent call inside the scope and same context and my problem was solved. – dan richardson Feb 7 '13 at 10:31 1 ...
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How to check if APK is signed or “debug build”?

As far as I know, in android "release build" is signed APK. How to check it from code or does Eclipse has some kinda of secret defines? ...