Re: [Boost-users] converting value before inserting into a list

From: David Walthall (walthall_at_[hidden])
Date: 2006-09-20 10:33:57

Flex Ferrum wrote:
> map<int,int> m;
> vector<int> a,b;
> std::transform(a.begin(), a.end(), std::back_inserter(b), var(m)[_1]);

Is this a case where transform is not appropriate?  My understanding is 
that the operation supplied to transform must not have any side effects, 
and here m may be modified by operator[].  Does this count as a side effect?

Thanks,
David