lambda-by-reference.cpp

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#include <iostream>

int main()
{
        std::string suffix = "\n";

        auto lambda1 = [&suffix](const std::string& string) -> std::string { return string + suffix; };

        std::string ex = "Hello World";
        std::cout << lambda1(ex);
        suffix = "ab\n";
        std::cout << lambda1(ex); // suffix has changed in in the lambda
        return 0;
}