std::string - case insensitive?

[Gernot Frisch]

hi,

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?

 

[Victor Bazarov]

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::string, MyStoredType, MyCaseInsentitiveCompare> myMap;


V

 

[rajkumar]

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
Raj

 

[Richard Herring]

hi,

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?

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

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