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dplyr: “Error in n(): function should not be called directly”

I am attempting to reproduce one of the examples in the dplyr package but am getting this error message. I am expecting to see a new column n produced with the frequency of each combination. What am I missing? I triple checked that the package is loaded. ...
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How to remove the first commit in git?

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Simulate airplane mode in iPhone Simulator

Is there any way to simulate airplane mode in the iPhone Simulator? 4 Answers 4 ...
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Overwrite or override

It might seem to be a stupid question but I'm just so curious and want to use the correct term when talking about the issue. Couldn't find a similar question here so I decided to create a new one. ...
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Deprecated warning for Rails 4 has_many with order

I have this model in my rails app which throws warning when I try to create records in console. 5 Answers ...
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Webstorm: “Cannot Resolve Directory”

This is starting to bug me and I'd either like it turned off or fixed. So Webstorm has a sweet feature in it's HTML parser that will attempt to resolve directories in strings that are supposed to reference a file in your project. For example: ...
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Queries vs. Filters

I can't see any description of when I should use a query or a filter or some combination of the two. What is the difference between them? Can anyone please explain? ...
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What is the printf format specifier for bool?

Since ANSI C99 there is _Bool or bool via stdbool.h . But is there also a printf format specifier for bool? 8 Answer...
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How to sync with a remote Git repository?

I forked a project on github, made some changes, so far so good. 5 Answers 5 ...
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Can I tell the Chrome script debugger to ignore jquery.js?

Is there a way to tell the Chrome debugger (or maybe Firebug?) to not break within certain files? To assume they're not broken, essentially? This seems like something they might build in. ...