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

On Wed, Jun 3, 2009 at 1:58 AM, Boris Schaeling wrote:

On Sun, 31 May 2009 10:15:22 +0200, Michael Schuster wrote:

...

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?

I'm not sure what you mean with 'replace command'. boost::algorithm::replace_all() simply replaces a substring with another. If you mean boost::algorithm::split() you can pass a predicate as the third parameter (boost::algorithm::is_punct() might help).

For what you are doing, perhaps regex_replace in Boost.Xpressive might be more useful?