Re: [Boost-users] Question about using Boost::for_each function to set a local variable if a condition is met

On 1/30/07, Meryl Silverburgh wrote:

Hi,

I am trying to Boost::for_each function to set a local variable if all elements in this is DEFAULT type.

Here is my code, but I don't know how to implement the last part of the if_then call.

boolean rtnValue = false;

bool rtnValue = true; // assume true

for_each(mylist.begin(), mylist.end(), if_then( bind(&ListItem::getType, _1) == DEFAULT, set the local value to true if true if all of them are DEFAULT type ));

bind(&ListItem::getType, _1) != DEFAULT, set the local value to false));

if you can give me some pointers, I will be appreciated.

ie start with true, set it to false if any are NOT the default. Not sure how to bind that though - probably need 'boost::ref(rtnValue) = false' or something like that.

Thank you.

HTH, Tony