Re: Question on using for_each
On Nov 6, 11:35 am, sean_in_rale...@yahoo.com wrote:
On Nov 6, 9:47 am, Yan <yvinogra...@gmail.com> wrote:
I have a vector of elements which I iterate through and call a method
on each of the elements. I want to do it using std::for_each
algorithm, but having a problem implementing it since the method that
I call on each element takes an argument and I don't know how to pass
this argument through. Here is the code using an old fashioned loop:
......
std::vector<unsigned char> bytes;
std::vector<T> elements;
...
for (int i = 0; i < elements.size(); ++i) {
elements[i].serialize(bytes);}
.........
could someone please help me out rewrite that using std::for_each?
Thanks!
Here's the standard-C++ way, though the boost::bind method
mentioned earlier is more flexible.
class MySerializable
{
public:
void serialize(vector<unsigned char> *b)
{
b->push_back(my_bits);
}
private:
unsigned char my_bits;
};
int
Thanks everyone!
Indeed, in this case the good old loop seems easier to write, read,
and, if needed, to debug :)
main(int argc, char **argv)
{
vector<unsigned char> bytes;
vector<MySerializable> elements;
// ... fill in elements ...
for_each(elements.begin(), elements.end(),
bind2nd(mem_fun_ref(&MySerializable::serialize=
),
&bytes));
}
Sean
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