Boost Replace Function

[Rehorav]

Hey everyone, I'm messing around with boost (learning about their lexical parser anything Boost can do with strings), and I can use the replace_all function, but is there a function to replace only the current instance of the word that the line is reading?

For example, when I use the following code:

    while ( !Input.eof ( ) )
    {
        getline ( Input, String );
        boost::replace_all ( String, "test2", ToReplaceStringWith );
        outf << String << endl
    }

of course it replaces every instance of "test2" in the text file. But I actually want to replace "test2" only line by line, rather than all at once. That way, lets say I can change "test2" to "test22" in the first instance, and the next time I run into it I can change "test2" to "aweometest" or something of the sort.

I looked a little into regex_replace, but would that do what I want? How would I replace the replace_all function with regex_replace if it will do what I want?

[D_Drmmr]

But I actually want to replace "test2" only line by line, rather than all at once.

That's exactly what your code does.

[Rehorav]

How would I make it stop after the first occurrence though?

[D_Drmmr]

How would I make it stop after the first occurrence though?

boost::replace_first