How can I copy one map into another using std::copy?
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by Frank
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Published on 2010-04-30T23:56:50Z
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2010/05/01
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I would like to copy the content of one std::map into another. Can I use std::copy for that? Obviously, the following code won't work:
int main() {
typedef std::map<int,double> Map;
Map m1;
m1[3] = 0.3;
m1[5] = 0.5;
Map m2;
m2[1] = 0.1;
std::copy(m1.begin(), m1.end(), m2.begin());
return 0;
}
Is there any way to make it work with std::copy?
Thanks!
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