成员方法内部的C ++ 11 Lambda函数继承作用域

foreach

void foreach(void (*p)(pNode))
{ /* ... */ }

int a = 5;
env.N().foreach
(
    [&](pNode n)->void
    {
        n->tps(a); 
    }
);

method()

Object

error: no matching function for call to ‘IDSet<Node>::foreach(Object::method()::<lambda(pNode)>)’
note: candidate is: void IDSet<T>::foreach(void (*)(IDSet<T>::pT)) [with T = Node, IDSet<T>::pT = pNode]

reinterpret_cast

error: invalid cast from type ‘Object::method()::<lambda(pNode)>’ to type ‘void (*)(pNode)’

[&](pNode ...

static

[=]

[]

[a]

void foreach(void (*p)(pT))
{
    for(pTiter i = _map.begin(); i != _map.end(); i++)
    {
        (*p)(i->second);
    }
}

void foreach(std::function<void(pT)>(p))
{
    for(pTiter i = _map.begin(); i != _map.end(); i++)
    {
        p(i->second);
    }
}