Qvector

[phillip_Qt]

Hi ALL

can any body help me by telling what will bw the Qt equivalent of std::vector.swap().

Thank you all.

[jpn]

Take a look at QtAlgorithms.

[phillip_Qt]

Thanx. i went through the document. wat i found is qSwap() which can swap the tow passing element. but my requirment is replacement of std::vector.swap(vector element);
i ve stored some values. like
std::vector<int> vectelem;
int a;
int b;
vectelem.push_back(a);
vectelem.push_back(b);
swap(vectelem);

how to replace in Qt?

[wysota]

swap is not part of std::vector but is a separate algorithm. You can use it with QVector as well

QVector<int> v;
v.push_back(7);
v.push_back(8);
std::swap(v[0], v[1]);

QVector<int> v;
v.push_back(7);
v.push_back(8);
std::swap(v[0], v[1]);

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By the way, I think your code is incorrect - you have to let swap() know which elements to swap. And you can use qSwap() as a replacement for swap().

Or maybe you wanted to use std::reverse()?

QVector<int> v;
v.push_back(7);
v.push_back(8);
std::reverse(v.begin(), v.end());

QVector<int> v;
v.push_back(7);
v.push_back(8);
std::reverse(v.begin(), v.end());

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