basic_string::at
basic_string::at
const_reference at(size_type pos) const;
reference at(size_type pos);
Each member function returns a reference to the element of the controlled sequence at position pos, or reports an out-of-range error.
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basic_string::at
const_reference at(size_type pos) const;
reference at(size_type pos);
Each member function returns a reference to the element of the controlled sequence at position pos, or reports an out-of-range error.