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https://github.com/boostorg/iterator.git
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Trim trailing spaces.
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@@ -19,7 +19,7 @@ struct string_appender
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string_appender(std::string& s)
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: m_str(&s)
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{}
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void operator()(const std::string& x) const
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{
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*m_str += x;
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@@ -37,9 +37,9 @@ int main(int, char*[])
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x.push_back("!");
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std::string s = "";
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std::copy(x.begin(), x.end(),
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std::copy(x.begin(), x.end(),
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boost::make_function_output_iterator(string_appender(s)));
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std::cout << s << std::endl;
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return 0;
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