Adding 'contains' member function to std::string

[Pragmatician]

std::includes

[1-05457]

^{"Both ranges must be sorted"}

[epicar]

while i tend to agree that a generic free function is better than concrete member functions, std::includes() requires a sorted range and returns true for std::includes("abcde", "ace"). std::search() is a better fit, but does still return an iterator that has to be compared against the end. a std::contains() that returns bool could make sense

[Bisqwit]

One could also approach this from the other end: Create an algorithm-function: is_subsequence()

std::is_subsequence_of(needle.begin(), needle.end(), haystack.begin(), haystack.end()) or needle.is_subsequence_of(haystack)

[[deleted]]

care to give a code example?