On May 1, 2013, at 12:21 PM, Nick Cox wrote:
> In a sufficiently serious script, there would be testing
Agreed, but in many cases, the idiom
gen foo = regexs(<integer>) if regexm(<strvar>,<regexp>)
implements an effective (and flexible) test via the call to -regexm()-. The above has the advantage of providing a result for those observations where the input is properly formed, and sets you up for listing the cases where there is a problem, e.g.,
li <strvar> if mi(foo)
-- Phil
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