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Merging two std::map objects

General and Gameplay Programming Programming

Started by Max_Payne July 09, 2005 12:07 PM

1 comment, last by Fruny 18 years, 9 months ago

Max_Payne

757

Author

July 09, 2005 12:07 PM

Supposing I have two std::map<X,Y> objects A and B. I want to create another one, C, which would contain all the elements contained in A and B, what is the simplest way to do this? Alternatively, is there a direct way to copy the elements from B into A?

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SiCrane

11,840

July 09, 2005 12:11 PM

Do you mean something like A.insert(B.begin(), B.end()) ?

Fruny

1,658

July 09, 2005 12:12 PM

std::map<Foo,Bar> a;std::map<Foo,Bar> b;std::map<Foo,Bar> c;c.insert(a.begin(), a.end());c.insert(b.begin(), b.end());

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