If you want good answers then you need to ask good questions. "best", "fastest" and similar ...st criteria generally depend on the details of what you want to do. Very often there is no '...st' answer, even in a well defined context. Taking that on board, would you care to rephrase your question providing a little more detail concerning the matches you wish to perform? Some important details are:

True laziness is hard work

In reply to Re: Fastest way to grep multiple time on some array by GrandFather
in thread Fastest way to grep multiple time on some array by Anonymous Monk

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