Taking a look at the constructor reference of basic_string
, one can see that there is no easy way of repeating a complete string. For a single character, you could use (2)
like this:
std::string s(5, 'a'); // s == "aaaaa"
For generating a string repetition, you’ll need some workaround. It’s easier to do this post-construction by simply filling the string with, for example, std::generate
(having fun with algorithms).
#include <string>
#include <algorithm>
// ...
std::string pattern("Xeo ");
auto pattern_it = pattern.begin();
std::string s(256, '\0');
std::generate(s.begin(), s.end(),
[&]() -> char {
if(pattern_it == pattern.end())
pattern_it = pattern.begin();
return *pattern_it++; // return current value and increment
});
Live example.