I'm a newbie for boost phoenix, I wrote a small piece of code but it totally confuses me about the execution sequence, you can check the code
------------------clip-----------------
std::vector<int> v;

v.push_back(1);

ph::for_each(v,

             ph::lambda[ph::ref(cout)<<"a",

                        ph::ref(cout)<<"b"

                 ])(v);



ph::for_each(arg1,

             ph::lambda[ph::ref(cout)<<"a",

                        ph::for_each(v,

                                         ph::lambda[ph::ref(cout)<<"b",

                                                    ph::ref(cout)<<"c"

                                             ]),

                        ph::ref(cout)<<"d"

                 ])(v);

------------------------clap--------------------------

The first output is "ab" but the second output is "dbca".

It seams ph::for_each is lazy evaluate , but what is the correct one to make it execute from left to right?

thanks



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