How to create a vector of strings from a vector of string_view without iteration?

Question

I have the following vector:

std::vector<std::string_view> const keys{"A1", "A2", "A3", "B1", "C1"};

I want to create a vector of std::string out of it without iterating over it.

Someone is going to have to iterate over that vector, creating strings from the string_view. — Marshall Clow
– Marshall Clow, Commented Sep 14, 2019 at 18:19
You can't accomplish this without iteration. But if you don't want to iterate manually, then use an algorithm like std::for_each() or std::transform() — Remy Lebeau
– Remy Lebeau, Commented Sep 14, 2019 at 19:13

Igor Tandetnik · Accepted Answer · 2019-09-14 23:39:16Z

5

std::vector<std::string> v(keys.begin(), keys.end());

should do it. Of course, there's iteration hidden inside that constructor.

answered Sep 14, 2019 at 23:39

Igor Tandetnik

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1 Comment

Yeah. This is what I was looking for.