Re: [Boost-users] boost::ptr_vector::sort with c++11 lambdas

Den 11-11-2011 13:52, qplace skrev:

I am trying to figure out if c++11 lambda can be used instead of the straight preducates.

say, I have class A : public boost::noncopyable { ... }

and

boost::ptr_vector<A> lst;

I'd like to use something like:

lst.sort([&] (const A& v1, const A& v2) ->bool {return v1< v2;});

Tutorial for ptr_vector says that predicates are wrapped in indirect_fun. May be this is the reason the sort fails to compile?

Could be. What does the error message say? I'm thinking that the lambda function is not properly converted to a pointer to a function. An escape route may be to use std::sort() with a lambda taking two void*. -Thorsten