Re: [Boost-users] How can I save the values in lambda expression? Can any one with kindness help me?

"fmingu" wrote in message news:31100020.905591247202195143.JavaMail.coremail@bj163app94.163.com...

After your advice,I wrote the following test program: int main(int argc, char *argv[]) { int nnumber=7; int switchvalue=1; if_then_else(var(nnumber)==6, var(switchvalue)=3 ,var(switchvalue)=30); std::cout<<" the nnumber is "<

the value in the lambda expression did not saved. Can you tell me why?

if_then_else only creates and returns a lambda function object.

And How can I correct it?

You need to apply it (note invoking the fn call operator): if_then_else(var(nnumber)==6, var(switchvalue)=3 ,var(switchvalue)=30)(); HTH / Johan