[Boost-Users] function object with lambda

In our last exciting episode "Matt Hurd" wrote:

Not sure how to force a for_each with a lambda to invoke the random function object successively. In the for_each version below get_long is called just once. Not sure how to use var, std_function, bind or something else to overcome this. I'm sure the answer is straight forward... anyone?

for_each(v.begin(),v.end(), _1 = gen_long() );

Here, gen_long() is invoked and the resulting value is stored in the lambda functor, which is passed to for_each. You need to delay the call of gen_long with bind: for_each(v.begin(), v.end(), _1 = bind(gen_long)); Jaakko