Custom Class for std::set
Oct 27, 2014 at 2:14am
When we want to use custom classes for the STL set data structure, which way do you guys do it?
I look around and see people passing comparators, overloading operator(), and also overloading operator< in the class itself.
Which one's the idiomatic c++ way?
I look around and see people passing comparators, overloading operator(), and also overloading operator< in the class itself.
Which one's the idiomatic c++ way?
Oct 27, 2014 at 4:09am
They are all idiomatic, this is more of a question of class design.
If a class has an ordering relation that makes sense for its values, provide operator<
When it doesn't (or perhaps when it has multiple ways in which it can be ordered), then create a comparison predicate.
If a class has an ordering relation that makes sense for its values, provide operator<
When it doesn't (or perhaps when it has multiple ways in which it can be ordered), then create a comparison predicate.
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