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Error while inserting char through string :: insert

My question is similar to this one , but there is no sample code there and I didn't find it useful.

My mistake

calling the private constructor of the class 'std :: __ 1 :: __ wrap_iter'

Below is a minimal example of my problem:

#include <iostream>
#include <string>

using namespace std;

int main(){
    string g = "this_word";
    cout << g << endl;
    char temp = g[0];
    g.erase(0,1);
    cout << g << endl;
    g.insert(0,temp); // Compiler seems to dislike this.  Why?
    cout << g << endl;
    return 0;
}

I tried this across two compilers and the same error. Read as far as I could from the standard documentation but don't understand my mistake.

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1 answer


Better to check all the signatures of the std :: string :: insert () overloads , and then decide to use which one. g.insert(0,temp);

just doesn't match any of them.

For insertion, char

you can pass an iterator like

g.insert(g.begin(), temp);


or pass the index and count together:

g.insert(0, 1, temp);
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