concatenating vectors

[mike7411]

I was just wondering if there is a built-in function for concatenating
two STL vector objects. For instance, I might have a vector with 10
objects and one with 20. Then, I would call this built-in function
to concatenate the vectors into a vector with 30 objects.

Any help is appreciated. Thank you.

 

[Victor Bazarov]

I was just wondering if there is a built-in function for concatenating
two STL vector objects. For instance, I might have a vector with 10
objects and one with 20. Then, I would call this built-in function
to concatenate the vectors into a vector with 30 objects.

RTFM about the 'insert' member of 'std::vector'. You need the one
with three iterator arguments. Basically you need to insert the
second vector right before the end of the first one (hint, hint...)

V

 

[BobR]

I was just wondering if there is a built-in function for concatenating
two STL vector objects. For instance, I might have a vector with 10
objects and one with 20. Then, I would call this built-in function
to concatenate the vectors into a vector with 30 objects.

Any help is appreciated. Thank you.

What Victor said. Or use std::copy:

std::vector<int> Vdata1(5, 5);
std::vector<int> Vdata2(10, 10);
std::copy( Vdata2.begin(), Vdata2.end(),
std::back_inserter( Vdata1 ) );

std::copy( Vdata1.begin(), Vdata1.end(),
std:stream_iterator<int>( cout, "\n" ) );

 

[Gianni Mariani]

I was just wondering if there is a built-in function for concatenating
two STL vector objects. For instance, I might have a vector with 10
objects and one with 20. Then, I would call this built-in function
to concatenate the vectors into a vector with 30 objects.

Any help is appreciated. Thank you.

std::vector::append.

 

[Victor Bazarov]

std::vector::append.

Your library provides *that*? Wow! Are you sure you're not confusing
'std::vector' with 'std::string'?

V

 

[Gianni Mariani]

Your library provides *that*? Wow! Are you sure you're not confusing
'std::vector' with 'std::string'?

Oops -

std::vector::insert ...