Last Friday of each month: Difference between revisions

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(Added Arturo implementation)
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2012-12-28</pre>
 
=={{header|Mathematica}}/{{header|Wolfram Language}}==
<lang Mathematica>FridaysOfYear[Y_] :=
NestWhile[(DaysPlus[#, - 1]) &, #, (DateString[#, "DayName"] != "Friday") &] & /@
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