set question
Can we use set data structure with pair of values? If yes, how would the values be sorted? Would it be sorted based on first value in the pair?
> Can we use set data structure with pair of values?
Yes.
> If yes, how would the values be sorted?
If we don't provide a predicate to compare pairs, the members of the pair must be LessThanComparable, and the overloaded operator< for
Yes.
> If yes, how would the values be sorted?
If we don't provide a predicate to compare pairs, the members of the pair must be LessThanComparable, and the overloaded operator< for
std::pair would be used. Which | Compares lhs and rhs lexicographically, that is, compares the first elements and only if they are equivalent, compares the second elements. http://en.cppreference.com/w/cpp/utility/pair/operator_cmp |
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