getting offset from iterator for use in another container

Hello,
I have two vectors (of different types) whose elements correspond to each other. I'm going through vector<foo> A using find_if and removing some elements. I want to remove the corresponding elements in vector<bar> B. What is the cleanest way? I don't think that

Code:

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iter - A.begin()

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is a good idea. What do you think?

You know what, I'm better off just going through manually beginning to end. This way I don't check the early elements multiple times DUH. But I'm still curious about the answer to my OP.

Well the desire to do so points to a design error. If vector B's element's depend on vector A's elements, then you should instead have a list of foo bar pairs, or perhaps one of the object types should hold the other.

But if you want to force a way to do it, then yeah iter-A.begin is as good a way as any. Or you can forget about find_if, and use an indexed for loop.

Quote:

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I have two vectors (of different types) whose elements correspond to each other

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also, what you said, indicated that the order doesn't matter. If so, std::map would be a better and cleaner option.