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What is the fastest way to compare two sets in Java?

...eAll(firstSet); If the contents of one and two are both empty, then you know that the two sets were equal. If not, then you've got the elements that made the sets unequal. You mentioned that the number of records might be high. If the underlying implementation is a HashSet then the fetching of ea...
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Creating an R dataframe row-by-row

...as you need stringsAsFactors=FALSE) # you don't know levels yet and then during your operations insert row at a time DF[i, ] <- list(1.4, "foo") That should work for arbitrary data.frame and be much more efficient. If you overshot N you can always shrink empty rows...
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Is there a way to get colored text in Github Flavored Markdown? [duplicate]

... It doesn't list the html tags they allow and I don't know if their implementation is open source(if it was I'd try looking at it to figure out which tags are allowed). – Roman A. Taycher May 28 '14 at 7:30 ...
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How do I uninstall a package installed using npm link?

... do npm install make sure to remove the current node_modules directory Now you want to remove this madness and use the real gulp-task, we have two options: Option 1: Unlink via npm: 1: Go to your project and do npm unlink gulp-task this will remove the linked installed module 2: Go to the g...
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Command line for looking at specific port

...to examine the status of a specific port from the Windows command line? I know I can use netstat to examine all ports but netstat is slow and looking at a specific port probably isn't. ...
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REST response code for invalid data

...lse. That is, the client requested something and supplied preconditions, knowing full well that those preconditions might fail. 412 should never be sprung on the client out of the blue, and shouldn't be related to the request entity per se. ...
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How to copy files between two nodes using ansible

... force Vagrant to use the ONE insecure_key for accessing all machines. But now I even do not get an error message (it waits forever). Also bug github.com/ansible/ansible/issues/7250 says it is not possible to copy from remote to remote. – therealmarv Mar 5 '15 ...
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How to bind multiple values to a single WPF TextBlock?

... I know this is a way late, but I thought I'd add yet another way of doing this. You can take advantage of the fact that the Text property can be set using "Runs", so you can set up multiple bindings using a Run for each one. Th...
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Difference between $(document.body) and $('body')

... Could be resolved now. There was a time when FF and IE would let you do this, and/or would get confused by items with an id of "body" (the error I hit was a customer using our script on a plastic surgeon's site with a picture tagged with the i...
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Why can't I inherit static classes?

...air. In .Net everything inherits from object, and everyone is expected to know that. So static classes always inherit from object, whether you specify it explicitly or not. – RenniePet Feb 7 '18 at 9:10 ...