vector push_back problem.

[Phiru]

I am adding int type into vector called "vi" several times like this.

std::vector<int> vi;

void addFunc(int *a, int cnt)
{
vi.erase(vi.begin(), vi.end());
vi.clear();

for(int i=0; i<cnt; i++)
vi.push_back(a[i]);
}

and I call the addfunc N times every sec.

And sometimes it has runtime error on vi.push_back line.

(called stack says "_CrtIsValidHeapPointer")

i don't know how come it has that problem.

any idea?

[cire]

I think it is more likely to be a problem with either a or cnt being inaccurate or invalid than a problem with the vector.

You can get rid of the erase call, by the way. clear is sufficient.

[Phiru]

The first time, I did just call clear func.
As someone said, just using clear to clear every elements in Vector is not sufficient. should call erase before clear. So i coded like that.
And I am looking it out to find error. Thanks anyways.

[cire]

As someone said, just using clear to clear every elements in Vector is not sufficient.

Someone was wrong.

[vlad from moscow]

Function clear is equivalent to erase(vi.begin(), vi.end()). So there is no need to call in fact the same function two times.

[Phiru]

I got wrong information.
Thanks to correct my wrong data in my head.