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Find intersection of two nested lists?

I know how to get an intersection of two flat lists: 20 Answers 20 ...
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What does $_ mean in PowerShell?

I've seen the following a lot in PowerShell, but what does it do exactly? 6 Answers 6 ...
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How to filter files when using scp to copy dir recursively?

I need to copy all the .class files from server to local with all dir reserved. e.g. server:/usr/some/unknown/number/of/sub/folders/me.class will be /usr/project/backup/some/unknown/number/of/sub/folders/me.class the problem is, there are many other useless files such as .svn-base files that i d...
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Controlling number of decimal digits in print output in R

There is an option in R to get control over digit display. For example: 3 Answers 3 ...
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ERROR: Error 1005: Can't create table (errno: 121)

I have troubles with forward engineering my MySQL database into WAMP server.. I was going to post an image of the schema but as this is my first post I can't. ...
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Get time in milliseconds using C#

I'm making a program in which I need to get the time in milliseconds. By time, I mean a number that is never equal to itself, and is always 1000 numbers bigger than it was a second ago. I've tried converting DateTime.Now to a TimeSpan and getting the TotalMilliseconds from that... but I've hea...
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Difference between toFixed() and toPrecision()?

I'm new to JavaScript and just discovered toFixed() and toPrecision() to round numbers. However, I can't figure out what the difference between the two is. ...
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How do you create different variable names while in a loop? [duplicate]

For example purposes... 10 Answers 10 ...
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SVN: Folder already under version control but not comitting?

svn stat says its not under version control, so I try to add it, and then it tells me it is. When I do an svn ci , it doesn't get comitted, and doesn't show up when I try to browse to repository online. ...
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How to backup a local Git repository?

I am using git on a relatively small project and I find that zipping the .git directory's contents might be a fine way to back up the project. But this is kind of weird because, when I restore, the first thing I need to do is git reset --hard . ...