std::string::replace standard implementation?

Question

In every language that I can think of, except C++, the function Replace essentially replaces all pieces of a string, whereas C++'s string class does not support simple operations like the following:

string s = "Hello World";
s = s.Replace("Hello", "Goodbye");
echo s; // Prints "Goodbye World"

This seems the most common use of any type of string replace function, but there doesn't seem to be a standard replace function in C++. Am I missing something here?

EDIT: I'm aware that there's not a built-in replace function like this in the standard library -- I'm wondering if there is a more or less standard implementation made from standard algorithms or something of that sort.

I always had the same complaint. I don't think there's any solution in STL except to use find in conjunction with replace. — Dave, Feb 13 '10 at 01:15
Similar question with more solutions: https://stackoverflow.com/questions/3418231/replace-part-of-a-string-with-another-string — Daemon, Feb 13 '23 at 19:58

score 10 · Accepted Answer · answered Feb 13 '10 at 01:14

10

You're not missing anything, its not in the standard library.
You can either write that yourself using find(), replace() etc. or use an implementation like replace_all() from Boosts string algorithm library.

answered Feb 13 '10 at 01:14

Georg Fritzsche

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score 0 · Answer 2 · answered Feb 13 '10 at 01:15

this is not exactly the same but there is a replace method:

#include <iostream>
#include <string>

using namespace std;

int main( void )
{
        string s = "Hello World";

        s.replace(0, 5, "Goodbye");

        cout << s << endl;

        return 0;
}

you can easily write your replacement using string::find, string::replace and a little loop

std::string::replace standard implementation?

2 Answers2

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