Re: Better/prettier way to copy from one set to another?

From:
"Jim Langston" <tazmaster@rocketmail.com>
Newsgroups:
comp.lang.c++
Date:
Thu, 4 Oct 2007 13:19:17 -0700
Message-ID:
<3WbNi.59$F52.41@newsfe12.lga>
"werasm" <werasm@gmail.com> wrote in message
news:1191528547.709832.241740@o80g2000hse.googlegroups.com...

On Oct 4, 9:45 pm, "Jim Langston" <tazmas...@rocketmail.com> wrote:

I normally do my own iterations using containers, but have been striving
to
learn the standard algorithms and use them. One one point in my code I
simply want to elements from one set into another. This is what I was
able
to piece together copying the elements from std::set<size_t> Triangles to
std::set<size_t> SelectedSet:

std::copy( Triangles.begin(), Triangles.end(),
std::insert_iterator<std::set<size_t> >( SelectedSet,
SelectedSet.begin() ) );

std::insert_iterator<std::set<size_t> >( SelectedSet,
SelectedSet.begin() )
is a mouthful. Is there a simpler way?


std::inserter( SelectedSet, SelectedSet.begin() );

//...
#include <set>
#include <iterator>

int main()
{
 std::set<int> s1;
 std::set<int> s2;

 std::copy(
    s1.begin(), s1.end(),
    std::inserter( s2, s2.begin() ) );
 return 0;
}


Ahh, thanks. I had tried std::back_inserter and was getting an error that
set didn't have .push_back. So many inserters. Thanks again.

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