std::basic_string<CharT,Traits,Allocator>::get_allocator — cppreference.com

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basic_string::find

basic_string::rfind

basic_string::find_first_of

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basic_string::find_last_of

basic_string::find_last_not_of

basic_string::npos

operator+

swap(std::basic_string)

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operator<<operator>>

getline

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