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

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31
votes
1answer
536 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
278 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 ...
2
votes
1answer
82 views

Regular Expression - for html objects

I did a previous research about similar questions, but I really am confuse about using html objects. I have the following situation: I Import a html from a url and I need to pick the numbers that ...