## Set membership check in Perl

Assume we represent a set by an array in Perl (so strictly speaking it is not merely a set but an ordered set). Now given an item, how to check if it is in the set or not?
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Assume we represent a set by an array in Perl (so strictly speaking it is not merely a set but an ordered set). Now given an item, how to check if it is in the set or not?
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A nice leisure book from a good author.
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This is a book I know when I was reading a paper that cited it. I did not read it from cover to cover but something interesting inside.
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PC’s clock is an oscillator and HPET (high performance event timer) to count oscillator ticks. The time function is therefore
where is the period of clock ticks and HPET is the tick count. Note, is varying slowly and therefore is not always accurate.
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This is what I did in my simulation processing code.
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