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Why does typeof NaN return 'number'?

... 21 Answers 21 Active ...
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How to add text to a WPF Label in code?

I feel stupid but cannot find out how to add a text to a WPF Label control in code. Like following for a TextBlock: 6 Answe...
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How do I put an already-running process under nohup?

I have a process that is already running for a long time and don't want to end it. 11 Answers ...
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Quickly reading very large tables as dataframes

I have very large tables (30 million rows) that I would like to load as a dataframes in R. read.table() has a lot of convenient features, but it seems like there is a lot of logic in the implementation that would slow things down. In my case, I am assuming I know the types of the columns ahead o...
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How do you get the footer to stay at the bottom of a Web page?

I have a simple 2-column layout with a footer that clears both the right and left div in my markup. My problem is that I can't get the footer to stay at the bottom of the page in all browsers. It works if the content pushes the footer down, but that's not always the case. ...
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Difference between Django's annotate and aggregate methods?

Django's QuerySet has two methods, annotate and aggregate . The documentation says that: 3 Answers ...
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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 can I find the first occurrence of a sub-string in a python string?

So if my string is "the dude is a cool dude". I'd like to find the first index of 'dude': 5 Answers ...
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How should I escape commas and speech marks in CSV files so they work in Excel?

I'm generating a CSV file (delimited by commas rather than tabs). My users will most likely open the CSV file in Excel by double clicking it. My data may contain commas and speech marks, so I'm escaping those as follows. ...
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Generating all permutations of a given string

What is an elegant way to find all the permutations of a string. E.g. permutation for ba , would be ba and ab , but what about longer string such as abcdefgh ? Is there any Java implementation example? ...