[Boost-users] [string_algo] replace string with tokens

Hello, I'm new to string_algo and have the following problem: I have string like a+3*sin(b) and want to replace a by a different string e.g. Alpha and b by Beta and sin by cos so that Alpha+3*cos(Beta) is the result. So tokens would be "+*()" The replace command works with spaces, but I think this should be possible with string_algo, too? Thanks for any hint Michael Schuster