[boost] Phoenix.bind VS Lambda.bind

Hi, Now I'm looking at Phoenix and Lambda libraries. Could somebody explain why Lambda allows to use the following expression: void foo(int) { ... } ... bind(foo, _1)(10); yet Phoenix does not. Phoenix requires to use helper variable: void foo(int) { ... } ... int i = 0; bind(foo, _1)(i); I've read document about "Forwarding Function Problem" (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2002/n1385.htm). I understand the core issue, but how does Lambda.bind solve it? Thank you, Alexey.