Jarann - 1 year ago 67

C++ Question

I've ran into a case where set::find is not the correct way to find the object because I'm finding the object in a different way (by std::find_if) than it is ordered in the set. I have not found any complexity information on finding elements this way. I assume it's linear because iterating through a "unordered" container to find a match is linear.

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Answer Source

You can look here and see that the complexity of *find_if* is linear.

It is because *find_if* is a generalized algorithm and it doesn't know a certain type of container it works with. So it can't use peculiarities of different containers to boost a search process and just checks all the elements to find the appropriate one.