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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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BCL (Base Class Library) vs FCL (Framework Class Library)

...y that, the base. It contains basic, fundamental types like System.String and System.DateTime. The Framework Class Library (FCL) is the wider library that contains the totality: ASP.NET, WinForms, the XML stack, ADO.NET and more. You could say that the FCL includes the BCL. ...
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How to negate the whole regex?

I have a regex, for example (ma|(t){1}) . It matches ma and t and doesn't match bla . 4 Answers ...
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Best way to display decimal without trailing zeroes

... And you can always throw an exorbitant* number of # symbols at the format. *not scientific – Anthony Pegram Jun 23 '10 at 20:43 ...
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Java Synchronized Block for .class

... So, if you have a static method and we don't want to synchronize all of its body, then we synchronized(this) is not good, instead synchronized(Foo.class) is appropriate. Is that right? – krupal.agile May 15 '19 at 13:3...
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Fixed Table Cell Width

... the table-layout:fixed style on the <table> or the tables css class and set the overflow style for the cells https://developer.mozilla.org/en-US/docs/Web/HTML/Element/col <table class="fixed"> <col width="20px" /> <col width="30px" /> <col width="40px" />...
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Does setWidth(int pixels) use dip or px?

... The applyDimension() version executes more code and it a bit more difficult to read I find. FWIW, the line I posted is what we actually use all over the place in the framework and standard apps. – Romain Guy Mar 9 '10 at 5:25 ...
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How can I do time/hours arithmetic in Google Spreadsheet?

...en the number being returned by your formula is being formatted as a time, and you want it formatted as a plain number, change the format of the cell to a plain number format: click the cell and then click Format, Number, Normal. Time values in Google spreadsheet are represented as days and parts o...
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builder for HashMap

...tations of those factory methods are that they: can't hold nulls as keys and/or values (if you need to store nulls take a look at other answers) produce immutable maps If we need mutable map (like HashMap) we can use its copy-constructor and let it copy content of map created via Map.of(..) M...
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How can I get a list of Git branches, ordered by most recent commit?

...e the "freshest" branch is the one that's been committed to most recently (and is, therefore, more likely to be one I want to pay attention to). ...