🚀 go-pugleaf

Hi people!
I would like the following to find its way into the standard:
In string template, it would be nice to have the function - say
  basic_string<T> safesstr(size_t start = 0, size_t length = npos) const;
- which would return the (possibly empty) intersection of the target string
and the requested range without throwing the out-of-range exceptions.
It is very useful, f.i., in parsing text files if certain field is not
present.
It is of course easy to write such myself (as I did), but the operation
seems rather common, so everybody will end up writing his own version.

                Cheers                       Genie

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Eugene V. Radchenko           Graduate Student in Computer Chemistry
E-mail: eugene@qsar.chem.msu.su                Fax: +7-(095)939-0290 
Ordinary mail:  Chair of Organic Chemistry, Department of Chemistry,
                      Moscow State University, 119899 Moscow, Russia
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