Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. — Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

Append characters to the string.

string&
append(
    std::size_t count,
    char ch);
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Append a string to the string.

string&
append(
    string_view sv);
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Append a range of characters.

template<
    class InputIt>
string&
append(
    InputIt first,
    InputIt last);
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