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

This is an older version of Boost and was released in 2024. The current version is 1.90.0.

string::operator+=

string::operator+=

Append characters from a string.

string&
operator+=(
    string_view sv);
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Append a character.

string&
operator+=(
    char ch);
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