For questions about the function RegularExpression which is used in string patterns in functions as StringCases, StringReplace, StringPosition,StringCount etc.

learn more… | top users | synonyms (1)

27
votes
0answers
420 views

Why is StringExpression faster than RegularExpression?

Edit: as noted by Albert Retey the performance difference is only seen when sub expression extraction is performed. If this test is used below the timings are similar: ...
4
votes
5answers
239 views

A simple StringCases problem

Given this text: text1 = " A Vitamin D Deficiency (ICD-9-CM 268.9) (ICD-9-CM 268.9) 09/11/2015 01 "; Yes, the ICD code values are duplicates- possibly but ...