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std::string - case insensitive?


what would be the easiest (fastest to write) way to abbrevate from
std::string and make it case insensitive for use with std::map?
Overwrite c'tors and = operator, or overwrite <,>, and compare

int main(int argc, char** argv) {printf
("%silto%c%cf%c gl%ssic%ccom%c" , "ma", 58, 'g', 64, "ba", 46, 10);}
Jul 23 '05 #1
3 7006
"Gernot Frisch" <Me@Privacy.net > wrote...
what would be the easiest (fastest to write) way to abbrevate from
std::string and make it case insensitive for use with std::map?
Overwrite c'tors and = operator, or overwrite <,>, and compare functions?

No, the easiest would be to provide your own comparator when
constructing your map. See the third argument for the 'map' template.

std::map<std::s tring, MyStoredType, MyCaseInsentiti veCompare> myMap;
Jul 23 '05 #2
You dont need to over write <

map just needs you to define < operator. == > are not needed

You can pass a custom comparion operator to the map constructor in
which case it will ignore the string < operator.
Look the third argument map takes it defaults to std::less

Jul 23 '05 #3
In message <39************ *@individual.ne t>, Gernot Frisch
<Me@Privacy.net > writes

what would be the easiest (fastest to write) way to abbrevate from
std::string and make it case insensitive for use with std::map?
Overwrite c'tors and = operator, or overwrite <,>, and compare

If you want a complete case-insensitive string class, rather than just a
hack for std::map, there's another approach: use std::basic_stri ng with
an appropriate traits class.

See http://www.gotw.ca/gotw/029.htm

Richard Herring
Jul 23 '05 #4

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