How to remove all substrings from a string

Question

How to remove all instances of the pattern from a string?

string str = \"red tuna, blue tuna, black tuna, one tuna\";
string pattern = \"tuna\";

Answer 1

Try something like:

void replaceAll(std::string& str, const std::string& from, const std::string& to) {
    if(from.empty())
        return;
    size_t start_pos = 0;
    while((start_pos = str.find(from, start_pos)) != std::string::npos) {
        str.replace(start_pos, from.length(), to);
        start_pos += to.length(); // In case 'to' contains 'from', like replacing 'x' with 'yx'
    }
}

From Replace part of a string with another string