Those slashes are actually the way of writing the pattern matching function in Perl. In SAS, … See more

And this would tell our program to search for any string which contained the exact string ‘Groucho Marx’ anywhere inside it. The phrase ‘I saw Groucho Marx’ would match, as … See more

Now that we have seen a character string, the simplest form of the Perl regular expression, we are ready to take a look at some of the basics of Perl regular expression… See more

This would match a capital ‘M’, followed by ‘a’, followed by one to three ‘word’ characters, followed by ‘x’. So this would match ‘Matrix’ and ‘Marx’. It would also match ‘Man… See more

The parentheses group the two parts of the ‘alternation’ pattern. The whole pattern now will only match a capital ‘M’, then an ‘a’, then either ‘r’ or ‘n’, then ‘x’. So only strings containing ‘… See more