Hi,

I've tried that, and I got a bunch of errors. I'm using boost::bind for that, not boost::lambda.
Here is the error

The following line:
std::transform(array.begin(), array.end(), std::back_inserter(tr),
  bind(&std::string::replace, bind(&Foo::get, _1), 0, 5, ""));

generates:
error: no matching function for call to 'bind(<unknown type>, boost::_bi::bind_t<const std::string&, boost::_mfi::cmf0<const std::string&, Foo>, boost::_bi::list1<boost::arg<1> > >, int, uint32_t&, const char [1])'

Kobi.

On 4/26/06, Sebastian Redl <sebastian.redl@getdesigned.at> wrote:
Kobi Cohen-Arazi wrote:

> std::vector<Foo> array; // say it is already populated
> std::vector<std::string> tr; // the transformed
> instead using my handcrafted for loop, I would like to transform the
>             std::list<Foo>::iterator endIter=array.end ();
>             for (std::list<Foo>::iterator iter=array.begin();
> iter!=endIter ;++iter)
>             {
>                 noExtResults.push_back (iter.get().replace (0,5, ""));
>             }
>
> I know it should be something like:
> std::transform (array.begin(), array.end (), std::back_inserter(tr),
>                       bind(&Foo::get, _1));
>
> So here I'm stuck. The bind function will know to extract the string
> using get. But how to I get that string and do something like:
> bind(&std::string::replace (???))

I'd use straight Boost.Bind, not Lambda. But the syntax is the same:

std::transform(array.begin(), array.end(), std::back_inserter(tr),
  bind(&std::string::replace, bind(&Foo::get, _1), 0, 5, ""));

Or you could use one of the special iterators from Boost.Iterator
instead of the nested bind.

Sebastian Redl
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