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Why is NaN not equal to NaN? [duplicate]

...n this question pops up in searches. NaN is designed to propagate through all calculations, infecting them like a virus, so if somewhere in your deep, complex calculations you hit upon a NaN, you don't bubble out a seemingly sensible answer. Otherwise by identity NaN/NaN should equal 1, along with ...
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Traversing text in Insert mode

...iliar with it. The right way is to press Esc, go where you want to do a small correction, fix it, go back and keep editing. It is effective because Vim has much more movements than usual character forward/backward/up/down. After you learn more of them, this will happen to be more productive. Her...
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How to uninstall Python 2.7 on a Mac OS X 10.6.4?

... PATH variable by reverting my .bash_profile . But I also want to remove all directories, files, symlinks, and entries that got installed by the Python 2.7 install package. I've got the install package from http://www.python.org/ . What directories/files/configuration file entries do I need to re...
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Viewing all `git diffs` with vimdiff

...n saving changes you have to type :w! instead of :w". That is because git calls vimdiff with the -R option. You can override it with git config --global difftool.vimdiff.cmd 'vimdiff "$LOCAL" "$REMOTE"'. That will open vimdiff in writeable mode. – wisbucky Apr ...
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Cannot push to Heroku because key fingerprint

... I followed this post and others of the same kind without success :-(( Finally, I found the solution: I had to add my new rsa identity in my machine! So, first of all I created a new rsa key: ssh-keygen -t rsa -C "giordano.scalzo[at]gmail.com" -f ~/.ssh/id_rsa_heroku then added it to my machin...
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Why would introducing useless MOV instructions speed up a tight loop in x86_64 assembly?

... in the branch prediction table moving the branch eliminated the alias and allowed the branch to be predicted correctly Your Core2 doesn't keep a separate history record for each conditional jump. Instead it keeps a shared history of all conditional jumps. One disadvantage of global branch predic...
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How to Convert all strings in List to lower case using LINQ?

... Easiest approach: myList = myList.ConvertAll(d => d.ToLower()); Not too much different than your example code. ForEach loops the original list whereas ConvertAll creates a new one which you need to reassign. ...
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How to run Node.js as a background process and never die?

...ill %2 with the number being the index of the process. Powerful solution (allows you to reconnect to the process if it is interactive): screen You can then detach by pressing Ctrl+a+d and then attach back by running screen -r Also consider the newer alternative to screen, tmux. ...
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remove nuget package restore from solution

...ages>true</RestorePackages> Just have to remove this as well as all these lines manually from all *.csproj files: <Import Project="$(SolutionDir)\.nuget\nuget.targets" /> UPDATE: Turns out it's a persistent little bugger, if you're manually editing your project files, make sur...
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Get most recent file in a directory on Linux

... A minor issue: This version pipes all the output of ls to tail, then prints only the LAST line. IMHO it is better to sort in ascending order and use head instead, as chaos suggested. After printing the first line head quits, so sending the next line (actually...