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Repeat each row of data.frame the number of times specified in a column

What is the simplest way to expand each row the first two columns of the data.frame above, so that each row is repeated the number of times specified in the column 'freq'? ...
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Does anyone still use [goto] in C# and if so why? [closed]

I was wondering whether anyone still uses the "goto" keyword syntax in C# and what possible reasons there are for doing so. ...
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Combating AngularJS executing controller twice

I understand AngularJS runs through some code twice, sometimes even more, like $watch events, constantly checking model states etc. ...
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How to run only one task in ansible playbook?

Is there a way to only run one task in ansible playbook? 6 Answers 6 ...
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Read data from SqlDataReader

I have a SQL Server 2008 database and I am working on it in the backend. I am working on asp.net/C# 13 Answers ...
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Convert JSON string to dict using Python

I'm a little bit confused with JSON in Python. To me, it seems like a dictionary, and for that reason I'm trying to do that: ...
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Best way to work with dates in Android SQLite [closed]

I'm having some trouble working with dates on my Android application that uses SQLite. I have a couple questions: 9 Answers...
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How do I create a message box with “Yes”, “No” choices and a DialogResult?

I want to make simple Yes/No choiced MessageBox, but I think it is nonsense to design a form for that. I thought I could use MessageBox, add buttons, etc. to accomplish this. It is simple, but since there is no DialogResult returned, how do I retrieve the result? ...
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Add line break within tooltips

How can line breaks be added within a HTML tooltip? 27 Answers 27 ...
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css3 transition animation on load?

Is it possible to use CSS3 transition animation on page load without using Javascript? 11 Answers ...