Tuple option.
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On Tue, Oct 3, 2017 at 4:27 PM, Jacob Barrett<jbarr...@pivotal.io> wrote:
Voting on the conversation around C++ return values vs. out parameters.
This vote is to adopt the standard of return values over the use of out
parameters. On functions that must return more than one value to use the
C++11 std::tuple type for future compatibility with C++17.
For example:
std::tuple<int, std::string> foo::getAAndB() {...}
And call it with:
int a;
std::string b;
std::tie(a, b) = foo.getAAndB();
Alternatively the tuple can be called like:
auto r = foo.getAAndB();
auto a = std::get<0>(r);
auto b = std::get<1>(r);
In C++17:
auto [a, b] = foo.getAAndB();
Rather than:
int foo::getAAndB(std::string& b) {...}
Called like
std::string b;
auto a = foo.getAAndB(b);
-Jake
