fork(4) download 
  1. #include <cctype>
  2. bool case_insensitive_cmp(char lhs, char rhs)
  3. {
  4.     return std::toupper(lhs) < std::toupper(rhs);
  5. }
  6.  
  7. #include <algorithm>
  8. #include <string>
  9. bool case_insensitive_string_cmp(const std::string& lhs, 
  10.                                  const std::string& rhs)
  11. {
  12.   return std::lexicographical_compare(lhs.begin(), 
  13.                                       lhs.end(),
  14.                                       rhs.begin(),
  15.                                       rhs.end(),
  16.                                       case_insensitive_cmp);
  17. }
  18.  
  19. #include <map>
  20. #include <iostream>
  21.  
  22. int main()
  23. {
  24.   std::map<std::string,
  25.            std::string,
  26.            bool(*)(const std::string&, const std::string&)> 
  27.     my_map(case_insensitive_string_cmp);
  28.  
  29.   my_map["Helloooo"] = "foo";
  30.   my_map["HELLOOOO"] = "bar";
  31.   std::cout << my_map["hellOOOO"] << std::endl;
  32. }
  33.  
Success #stdin #stdout 0s 3476KB
comments (?)
stdin 
Standard input is empty
stdout 
bar
https://ideone.com/EJax7m
language:
C++14 (gcc 8.3)
created:
12 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!